Etymology

jam

J8A1M3

Today it means: A sweet mixture of fruit boiled with sugar and allowed to congeal. Often spread on bread or toast or used in jam tarts Full definition →

Middle English chammen
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jam · noun, verb1

  1. Middle English · inherited fromchammen
  2. English todayjam

First attested in the early 18th c. as a verb meaning “to press, be pressed, be wedged in”. Compare dialectal jammock (“to press, squeeze, crush into a soft mass, chew food"; also "a soft, pulpy substance”). Perhaps from Middle English chammen, champen ("to bite upon something, gnash the teeth"; whence modern champ, chomp), of uncertain origin; probably originally onomatopoeic. The "performance" sense is first attested with regards to jazz in 1929, and its origin, though uncertain, is likely metaphorical, "something sweet made by the combination of many things", with influence from jamboree.

jam · noun2

  1. Urdu · borrowed fromجامہ
  2. Hindi · borrowed fromजामा
  3. Persian · borrowed fromجامه“garment”
  4. English todayjam

Borrowed from Persian جامه (“garment”) and/or Hindustani (Hindi जामा (jāmā) / Urdu جامہ (jāma)), meaning "garment, robe". Related to pajamas and pyjamas.

JAM · noun3

Initialism, from just about managing.

Etymology from Wiktionary, CC BY-SA 4.0.