Put jam


2 [jam]
a preserve of whole fruit, slightly crushed, boiled with sugar: strawberry jam.
put on jam, Australian Slang. to adopt a self-important manner or use affected speech.

1720–30; perhaps special use of jam1

jamlike, jammy, adjective
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World English Dictionary
jam1 (dʒæm)
vb (often foll by on) , jams, jamming, jammed
1.  (tr) to cram or wedge into or against something: to jam paper into an incinerator
2.  (tr) to crowd or pack: cars jammed the roads
3.  to make or become stuck or locked: the switch has jammed
4.  to activate suddenly (esp in the phrase jam on the brakes)
5.  (tr) to block; congest: to jam the drain with rubbish
6.  (tr) to crush, bruise, or squeeze; smash
7.  radio to prevent the clear reception of (radio communications or radar signals) by transmitting other signals on the same frequency
8.  slang (intr) to play in a jam session
9.  a crowd or congestion in a confined space: a traffic jam
10.  the act of jamming or the state of being jammed
11.  informal a difficult situation; predicament: to help a friend out of a jam
12.  See jam session
[C18: probably of imitative origin; compare champ1]

jam2 (dʒæm)
1.  a preserve containing fruit, which has been boiled with sugar until the mixture sets
2.  slang something desirable: you want jam on it
3.  jam today the principle of living for the moment
[C18: perhaps from jam1 (the act of squeezing)]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

"to press tightly," also "to become wedged," 1706, of unknown origin, perhaps a variant of champ (v.). Sense of "to cause interference in radio signals" is from 1914. Jazz noun meaning "short, free improvised passage performed by the whole band" dates from 1929, and yielded
jam session (1933); perhaps from jam (n.) in sense of "something sweet, something excellent." Noun sense of "machine blockage" is from 1890, which probably led to the colloquial meaning "predicament," first recorded 1914.

"fruit preserve," 1730s, probably a special use of jam (v.) with a sense of "crush fruit into a preserve."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

jam (jām)
v. jammed, jam·ming, jams

  1. To block, congest, or clog.

  2. To crush or bruise.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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