rosellaA parrot belonging to any of the five to eight species in the genus Platycercus (originally specifically Platycercus eximius) which is native to Australia and nearby islands.
roselleHibiscus sabdariffa, an edible flower in the hibiscus family used to make hibiscus tea.
RosemarketA village and community in Pembrokeshire, Wales (OS grid ref SM9508).
RosemarkieA village on the east coast of the Black Isle, Highland council area, Scotland, historically in Ross and Cromarty (OS grid ref NH7357).
rosemaryA shrub, Salvia rosmarinus (formerly Rosmarinus officinalis), that originates from Europe and Asia Minor and produces a fragrant herb used in cooking and perfumes.
rosemaryiteA monoclinic-prismatic mineral containing aluminum, calcium, iron, magnesium, manganese, oxygen, phosphorus, and sodium.
rosemarylikeResembling or characteristic of the herb rosemary (Salvia rosmarinus, syn. Rosmarinus officinalis).
rosewoodThe fragrant wood of Dalbergia nigra, a Brazilian tree in the legume family, which has a sweet smell.
rosewormThe larva of any of several species of lepidopterous insects that feed upon the leaves, buds, or blossoms of the rose, especially Choristoneura rosaceana, the bristled roseworm, oblique banded leaf roller, or rosaceous leaf roller, and the curled roseworm.
rosewortAny of species Rhodiola rosea of roseroots.
roseyA diminutive of the female given name Rose and other related names, variant of Rosie.
RosgvardiaNational Guard of Russia (the internal military force of the Russian government)
rosickyiteA monoclinic-prismatic mineral containing sulfur.
RosicrucianA 'Brother' of the 'Order of the Rose Cross'; a member of a Rosicrucian Order.
RosicrucianismA theology of a secret society of mystics, allegedly formed in late medieval Germany by Christian Rosenkreutz, and using the rose cross as their symbol.
Rosicrucianista member of any modern group or organization, e.g. Ancient Mystic Order Rosae Crucis (A.M.O.R.C.), formed for the study of Rosicrucianism and allied subjects.
rosieresiteAn amorphous hydrous phosphate of aluminium with lead and copper.
rosifyTo view or portray in a rosy manner; to romanticize.
rosiglitazoneA thiazolidinedione derivative (trademark Avandia) taken orally in the form of its maleate C₁₈H₁₉N₃O₃S·C₄H₄O₄ to treat type 2 diabetes by decreasing insulin resistance.