Waltz  —n. 1 ballroom dance in triple time performed by couples revolving with sliding steps. 2 music for this. —v. 1 dance a waltz. 2 (often foll. By in, out, round, etc.) Colloq. Move easily, lightly, casually, etc.  waltz off with colloq. 1 steal. 2 win easily. [german walzer from walzen revolve]