Noun A rod or rope used to punish or torture victims by hitting them. A member of a political party who is in charge of enforcing the party's policies in votes. Transitive verb To hit with a whip. To mix food in a rapid aerating fashion. To urge into action. (He whipped the department into shape.) Intransitive verb To snap back and forth like a whip. (The pennants whipped in the wind.) To move very fast. (The wind whipped through the valley.)