- jam
- jam1verb (jams, jamming, jammed)1》 squeeze or pack tightly into a space.↘push roughly and forcibly into a position.↘crowd on to (a road or area) so as to block it.2》 become or make unable to move or work due to a part becoming stuck.3》 (jam something on) apply something forcibly: he jammed on the brakes.4》 make (a radio transmission) unintelligible by causing interference.5》 informal (in jazz or blues) improvise with other musicians.noun1》 an instance of jamming.2》 informal an awkward situation or predicament: I'm in a jam.3》 Climbing a handhold obtained by jamming a part of the body into a crack in the rock.4》 informal an improvised performance by a group of musicians, especially in jazz or blues.Derivativesjammer nounOrigin————————jam2noun1》 chiefly Brit. a spread or conserve made from fruit and sugar.2》 Brit. something easy or pleasant.verb (jam, jamming, jammed) make (fruit) into jam.Phrasesjam tomorrow a desirable thing that is promised but rarely materializes. [phr. from Lewis Carroll's Through the Looking Glass (1871).]OriginC18: perh. from jam1.
English new terms dictionary. 2014.