horsewhip Syllabification: (horse·whip)Pronunciation: /ˈhôrsˌ(h)wip/Definition of horsewhip noun a long whip used for driving and controlling horses. verb (horsewhips, horsewhipping, horsewhipped) [with object] beat with a horsewhip. horsewhip in other Oxford dictionaries Definition of horsewhip in the British & World English dictionary