British slang, meaning a thing that is excellent.
Did you just see Ian hit that pigeon with his shoe? What a cracker!
by IanS343 October 24, 2010
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A crazy person

Considered the white person swear
Yo, you cracker, thats not where you park your car.

Dumbass cracker egged my house.
by TheOneCracker:) August 5, 2020
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That cracker over there tries to always get something for nothing!
by Relentlesskarma April 5, 2015
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Scottish origin, a "cracker" was a person who talked and boasted, derived from the Gaelic "craic" meaning 'talk', later becoming more derogatory
let's go doon the pub n' hae a good craic wit tha mates" - "that wank is sure the cracker tonight
by Brolachan650 May 29, 2010
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Cracker is an adjective that means excellent or superior. An English word originating in the 18th century. Crack is the shortened version.
I was a natural cracker when it came to knowing the true definitions of words.
by Slang=ignorance December 27, 2017
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A racially and culturally insensitive word derived from 15th and 16th English views of Irish and Scottish peasants with Celtic accents and customs. English nobility nicknamed these people "Crackers" because whenever they spoke, it makes the English laugh at them. Hence, the phrase, "to crack a joke" or a "cracker" was intended for Irish and Scottish peasants who sounded funny when spoke, were being interrogated or tortured.
English Lord #1: I'm bored and need a good laugh, but I'm sick of calling the jester.

English Lord #2: I know, let's arrest some Crackers and interrogate them while we drink some ale!

English Lord #1: Brilliant! They are exceptionally entertaining under lashing!

English Lord #2: Especially when forcing them to beg for mercy!

English Lord #1: Last time, even the inquisitor could not stop laughing!
by Ian the Invincible May 14, 2020
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