JAM is a well-known slang word within the UK standing for Just A Minute, a long running popular BBC Radio 4 panel. The slang JAM was first used within the BBC, but this unofficial slang is now far more widespread.

Devised by Ian Messiter (1920-1999) whilst aboard a London bus, JAM was first broadcast in South Africa before being adopted by the BBC in 1967. It is distinctive by its use of the minute waltz.

An extremely entertaining but simple format, celebrity contestants have to speak for one minute on a given subject without deviation, repetition (of a word) or hesitation. If they do, other celebrity panellists can make a challenge; a successful challenge means they in turn get to continue talking on that subject for the remains of the minute. By 2009 over 700 episodes of JAM have been aired.
"Don't telephone me at 6-30 as I'll be listening to JAM on the wireless."

"No chance of that as I'm also a fan of JAM!"
by caiptean September 21, 2009
Top Definition
2 or more musicians making music together but not an official band.
Guitarist Dude: Hey man i heard you got a drumset, we should jam sometime.

Noob Drummer: Sounds good, i havent gotten to play to music yet.
by The Real Corbin March 09, 2006
a song that a person is particularly fond of, sometimes to the point of being their personal anthem or theme song. derived from the expression "jamming out".
"say mang, turn the radio up, this is my jam!"
by natasha elizabeth December 11, 2005
1)Means:To relax, or chill out.
person 1: damm im vexed im goin to smack him
person 2: jam man.
by edds July 31, 2006
A fruity preserve that usually goes on toast or in sandwiches
I like Jam on my toast
by Lizzie Moogle July 06, 2006
dope or opiate derived drugs.i.e. oxycontin. heroin
i was straight noddin of them jams on the bus.
by joeski March 09, 2004
To get together with people to play music.
Guitarist: Hey, you wanna get together and jam this weekend.
Drummer: Let's do it.
by Xeon636 February 24, 2006
A party, hopefully with lots of free beer.
Cam: Eh man, you coming to that jam in the park tonight?
by doktorfunk September 18, 2005
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