From Longman Dictionary of Contemporary Englishbuckboardbuck‧board /ˈbʌkbɔːd $ -bɔːrd/ noun [countable] TTBa light vehicle with four wheels that is pulled by a horse, and was used in the US in the 19th century
Examples from the Corpus
buckboard• A man with no teeth climbed into the buckboard for his second or third look.• When he felt himself sicken, Gloverjumped off the buckboard and walked around for some air, which restored him.Origin buckboard (1600-1700) buck “main structure of a carriage or cart” ((17-19 centuries)) (perhaps from bouk “body, belly” ((11-19 centuries)), from Old English buc; → BUCKET) + board 