Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z jackknife A resampling method that applies estimators to all subsamples that each omit a single different group (possibly of a single datapoint) of the original sample to provide a sample distribution of the estimate. jackleg Amateur, untrained; incompetent. Jackler A surname. jackless Without a jack. jacklight A spotlight or lamp mounted on a car, boat or pole, etc. to aid in hunting. jacklighter A hunter who jacklights. jacklighting The action of the verb to jacklight; the act of illuminating an animal for the purpose of hunting. Jacklin A surname. jackline A strong line, fixed fore-and-aft on a yacht, to which the crew are clipped for safety Jackling A surname. jackman A member of the pit crew responsible for lifting the car with a jack. jacko laughing kookaburra jackoff A jerkoff (mean, nasty, or obnoxious person), a jerk, an asshole. Jackowski A surname from Polish. jackpot A money prize pool which accumulates until the conditions are met for it to be won. jackpotting The act of rewarding a dog with a large number of treats during training. jackrabbit Any of several large North American hares of the genus Lepus. jackroll To rob or mug (a person). jackroller A criminal who robs those who are drunk or asleep jackrolling Gang rape of women by men. jacks A pair of jacks. jacksaw A bird, the merganser. Jacksboro A town, the county seat of Campbell County, Tennessee, United States. Shortened from Jacksonboro. jackscrew A jack (mechanical lifting device) which is operated by turning a leadscrew. jackshaft A common mechanical component used to transfer or synchronize rotational force in a machine. jackshay A pot (incorporating a cup) used to make tea jacksmelt Atherinopsis californiensis, an edible neotropical silverside native to the Pacific coast of North America. jacksmith A smith who makes jacks. jacksnipe Any member of the species Lymnocryptes minimus of migratory small stocky waders, the smallest of the snipes. Jackson A U.S. 20-dollar banknote USD (from the portrait of President Andrew Jackson on the bill). Jacksonesque Resembling or reminiscent of a Jackson. jacksonian An adherent of Andrew Jackson's politics and policies, or one who admires Jackson as a historical figure. Jacksonianism Synonym of Jacksonism. Jacksonism Support for Andrew Jackson's politics and policies. Jacksonite A Jacksonian. Jacksonmania Intense fanatical enthusiasm for the American pop band The Jackson 5. Jacksons A settlement in British Columbia, Canada. Jacksonville A city, the county seat of Duval County, Florida, United States. It is the largest city in Florida and is consolidated with the county. Jacksonvillian A person from or resident of Jacksonville, Florida. jackspeak British naval slang jackstaff A short spar, at the bows of a ship, that serves as a flagpole to fly a flag (a jack). jackstay A stay (rope, bar or batten), running along a ship's yard, to which is attached the head of a square sail. jackstone A jack; one of the playing pieces in the game of jacks. jackstraw One of the pieces used for the game called jackstraws or pick-up sticks. jacksy Backside jacktan An old unit of length in Guinea, equivalent to 3.658 metres. jacktar A sailor; especially, one in the Royal Navy. jacktop The top of a jack. jackwad A bad or stupid person; bastard. jackwagon An objectionable person; a jerk; a jackass. jackwood Any member of the species Cryptocarya glaucescens of rainforest trees of eastern Australia whose bark is dark brown or reddish-brown and often scaly and whose wood is used for musical instruments. jacky An Aboriginal. jackyard A spar at the top of a mast that supports a topsail Jackye A female given name. Jacmel A port town, commune, and capital of Sud-Est department, Haiti. Jaco A surname. Jacob A breed of multihorned sheep. Jacobabad A city in Sindh, Pakistan. Jacobe A surname. Jacobean Relating to a Jacob or James. Jacobethan Of a style incorporating elements of Elizabethan and Jacobean. Jacobi A surname from German. jacobian Used to specify certain mathematical objects named in honour of C. G. J. Jacobi. Jacobic Of or relating to the biblical Jacob. jacobin Synonym of Dominican, a member of the Dominican Order, particularly its French chapter. jacobine Synonym of Jacobin, especially as a feminine form. jacobinia The flowering plant Justicia carnea. Jacobinic Synonym of Jacobin, of or relating to the Jacobins of France. Jacobinical Synonym of Jacobin, of, related to, or characteristic of the Jacobins of France. Jacobinically In a Jacobinic manner. Jacobinism The principles of the Jacobins; especially the violent opposition to legitimate government. Jacobinization The process of Jacobinizing. jacobinize To convert to Jacobinism; to radicalize in opposition to the government. jacobita Commerson's dolphin Jacobite A supporter of the restoration of the Stuart kings to the thrones of England and Scotland in the late 17th century. Jacobitely Synonym of Jacobitically. Jacobitiana Objects, materials, or documents relating to the Jacobites. Jacobitic Of or pertaining to the Jacobites. Jacobitical Of or pertaining to the Jacobites. Jacobitically In a Jacobitic manner. Jacobitish Of or pertaining to the Jacobites. Jacobitishly In a Jacobitish manner. Jacobitism The political movement dedicated to the restoration of the Stuart kings to the thrones of England, Scotland, later the Kingdom of Great Britain, and the Kingdom of Ireland. Jacobowitz A surname. jacobs Testicles. Jacobsen A surname. Jacobsian Of or relating to Jane Jacobs (1916-2006), American-Canadian writer and activist. jacobsite A manganese iron oxide mineral, a magnetite spinel. Jacobson An English surname transferred from the given name. jacobsoniid Any beetle in the family Jacobsoniidae. Jacobus A former English gold coin from the Jacobite period. Jacobvitz A surname. Jacoby A male given name. jacoline An alkaloid found in ragwort (Jacobaea vulgaris, syn. Senecio jacobaea). Jacome A surname. jaconet A type of cotton cloth, especially as dyed and waterproofed. jaconine An alkaloid found in ragwort (Jacobaea vulgaris, syn. Senecio jacobaea). jacopever Any of certain species of marine fish in the genus Sebastes. Jacot A surname from French. jacozine An alkaloid found in ragwort (Jacobaea vulgaris, syn. Senecio jacobaea). jacquard Fabric woven on a Jacquard loom. jacquardlike Reminiscent of weaving on a jacquard loom. Jacque A surname from French. Jacqueline A female given name from French. jacqueminot A variety of rose with a deep crimson color. jacquerie A revolt organized by peasants, typically violent. jacques A male given name from French [in turn from Latin, in turn from Ancient Greek, in turn from Biblical Hebrew], feminine equivalent Jacqueline, equivalent to English Jacob. jacquesdietrichite A translucent blue mineral with the chemical formula Cu₂[BO(OH)₂](OH)₃. jacquet A game resembling backgammon. Jacquez A surname. Jacqui A diminutive of the female given name Jacqueline. Jacquie A diminutive of the female given name Jacqueline and of its variant spellings. Jacquot A surname from French. jactance Boasting; bragging; showing off. jactancy boasting; bragging jactation A tossing or shaking of the body; physical agitation, especially while asleep or confined to bed by illness; jactitation. jactitate To move about restlessly. jactitation Bragging or boasting, especially in a false manner to another's detriment. jacuaru Synonym of tegu (“South American lizard”). Jacuinde A surname from Spanish. jaculate To throw or cast, as a dart; to throw out; to emit. jaculation The act of throwing or tossing something jaculator One who throws or casts. jaculatory Darting, shooting or throwing out suddenly jaculiferous prickly; bearing spines jacupirangite Any of a melanocratic series of igneous rocks of varying composition, the characteristic minerals being purple titanaugite, nepheline, and magnetite or titanoferrite. jacutinga A black-fronted piping guan (Pipile jacutinga). jacuzzi A hot tub or whirlpool bath with underwater jets that massage the body. Jacynth A female given name. JAD Java Application Descriptor Jada A male given name, David's second cousin five times removed according to 1 Chronicles 2. jadarite A mineral, sodium lithium boron silicate hydroxide. Jadavpur A neighbourhood of Kolkata, West Bengal, India. Jadczak A surname from Polish. jadding Holing or undercutting (something, such as a bed of coal, or stone). jade A semiprecious stone, either nephrite or jadeite, generally green or white in color, often used for carving figurines. jaded Bored or lacking enthusiasm, typically after having been overexposed to, or having consumed too much of something. jadedly In a jaded manner. jadedness The state of being jaded or worn out. jadeite A pyroxene mineral, a sodium aluminium silicate with the chemical formula Na(Al,Fe³⁺)Si₂O₆, found in metamorphic rocks. jadeitic Of or relating to jadeite. jadeitite A rock that consists almost entirely of jadeite. Jadeja A Rajput clan in Kutch, a district of Gujarat, India. jadelike Resembling jade (the precious stone). jaden Made of, resembling, or pertaining to jade. jadesheen A green color like the precious stone jade. jadestone Synonym of jade (“semiprecious stone”). jadeware Crockery made from jade, or having a jade-like green colour. Jadgali An Indo-Aryan language spoken by the Jadgal, an ethnolinguistic group of Pakistan and Iran. Jadhav A surname from Marathi.