Top Definition
great, or really good. Mainly used in Birmingham, UK
I had a bostin night last night
by j May 09, 2003

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brilliant; fantastic; excellent; derived from the Anglo-Saxon 'bosten', meaning 'something to boast about' and now used almost exclusively in the Greater Birmingham area of the UK
I had a bostin balti last night at the Kashmiri Cottage.
by Steve Thorne July 18, 2003

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superlative usually substituted for great, similar to crackin.
ar It were bostin aye It?
by El Cholo February 19, 2004

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to surpass the expected.
That pint of ale was well bostin, I expected it to be as flat as Britney b4 the boob job.
by Lee Mort May 09, 2005

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Good, great, excellent. Often used in conjunction with 'mate'. Mainly used in Birmingham, by people such as Lisa Dutton.
Birmingham, its bostin mate
by duffy July 21, 2003

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An exclamation of suprise or excitement.
After hearing of his payrise John started shouting ''Bostin'' at everyone.
by Brummmy March 28, 2008

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