- a soldier of low rank in the part of an army that uses tanks or horses
- He was a cavalry trooper before being injured at the battle of Corunna.
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- (also state trooper)(North American English) (in the US) a member of a State police force
Idioms
See trooper in the Oxford Advanced American Dictionaryswear like a trooper
- (old-fashioned, British English) to often use very rude or offensive language
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trooper