(idiomatic, slang) A machine, especially an automobile. Implies that the machine is clunky or unreliable.
He's still driving the old boltbucket he drove while he was in school.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.