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
Origin of jam2
Related Words for jambox, predicament, plight, dilemma, bind, fix, strait, spot, quandary, scrape, difficulty, trouble, corner, hole, pickle, problem, obstruct, wedge, clog, force
Examples from the Web for jam
Contemporary Examples of jam
Most Cacophony events were one-off affairs, just enough to jam the culture a bit before moving on.Before the Bros, SantaCon Was as an Anti-Corporate Protest
December 12, 2014
The rears of planes are becoming hell with smaller, harder seats to jam as many passengers in as possible.Flying Coach Is the New Hell: How Airlines Engineer You Out of Room
November 25, 2014
Jam is there because of the sudden death of her boyfriend, Reeve, and the listless state of major depression it throws her into.The Thrilling, Traumatic Lives of Teens: The Fall’s Best YA Fiction
November 8, 2014
Mumford Sons, “Hopeless Wanderer” That one time Jason Bateman, Ed Helms, Will Forte, and Jason Sudeikis had a jam session.Andrew Garfield in ‘We Exist’ and More Celebrities in Music Videos
May 18, 2014
Personally, I'm waiting for the first scones, jam, and clotted cream fight.The ‘Real Housewives’ Land in London
May 15, 2014
Historical Examples of jam
Treacle, you hear: and for that matter, Martha has no jam to give!Night and Morning, Complete
You may make a charlotte with any sort of jam, marmalade, or fruit jelly.Directions for Cookery, in its Various Branches
Before he could recover, the second or tail section of the jam started to pull.The Forest
Stewart Edward White
But they ate so much of the bread and butter and jam and cream that they could not eat the cake.Changing Winds
St. John G. Ervine
Spread one half of them with jam, and lay the others on the top.The Skilful Cook
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.