From Longman Dictionary of Contemporary Englishhave a bash (at something)have a bash (at something)TRY something TO SEE IF IT IS GOOD British English spoken to try to do something, especially when you are not sure that you will succeed Why not have a bash at windsurfing? → bash
Examples from the Corpus
have a bash (at something)• The women all have bashed in noses and black eyes and the men have scars.• Maybe nothing at all, but for the love of a good woman he was at least prepared to have a bash.• There's something to have a bash at while you're relaxing over the Christmas hols! 