verb (used with object), jammed, jam·ming.
- to interfere with (radio signals or the like) by sending out other signals of approximately the same frequency.
- (of radio signals or the like) to interfere with (other signals).
verb (used without object), jammed, jam·ming.
Origin of jam1
Examples from the Web for jammed
Hice is like the Republican version of a right-wing Frankenstein, featuring the worst elements of the GOP jammed into one person.
I jammed my thumb into my mouth and almost choked on it while the screen lit up with sunny skies on a gleaming lake.‘Tracing the Blue Light’: Read Chapter 1 of Eileen Cronin’s ‘Mermaid’|Eileen Cronin|April 8, 2014|DAILY BEAST
Her pistol then jammed and she could only watch the gunman advance and point his gun directly at her head.
Rosemary Arnold says her clients—including a doggy-daycare owner—suffered when their town was jammed with traffic.Better Call Rosemarie! Meet the Lawyer Suing Christie Over Bridgegate|Olivia Nuzzi|January 16, 2014|DAILY BEAST
Tax breaks to selected manufacturers like automakers, and dollops of consumer credit, have jammed the malls and snarled traffic.
His hat was jammed on to his head and had been almost smashed in the jamming.Ayala's Angel|Anthony Trollope
"I am jammed on a lee shore this time, if ever I was," muttered Lingard.An Outcast of the Islands|Joseph Conrad
But Rosy see 'em coming, jammed the tiller over, the boom swung across and swept the three overboard pretty as you please.Cape Cod Stories|Joseph C. Lincoln
He jammed his fork into the hay and scrambled down the ladder to the barn floor.The Duck-footed Hound|James Arthur Kjelgaard
He jammed the speed lever up another notch, and in a minute more we were hittin' only the high places.Shorty McCabe|Sewell Ford
verb jams, jamming or jammed
Word Origin for jam
Word Origin for jam
"to press tightly," also "to become wedged," 1706, of unknown origin, perhaps a variant of champ (v.). Of a malfunction in the moving parts of machinery, by 1851. Sense of "cause interference in radio signals" is from 1914. Related: Jammed; jamming. The adverb is recorded from 1825, from the verb.
"fruit preserve," 1730s, probably a special use of jam (v.) with a sense of "crush fruit into a preserve."
"a tight pressing between two surfaces," 1806, from jam (v.). Jazz meaning "short, free improvised passage performed by the whole band" dates from 1929, and yielded jam session (1933); but this is perhaps from jam (n.1) in sense of "something sweet, something excellent." Sense of "machine blockage" is from 1890, which probably led to the colloquial meaning "predicament, tight spot," first recorded 1914.
see under get in a bind.