Waltz \Waltz\, v. i. [imp. & p. p. Waltzed; p. pr. & vb. n. Waltzing.]

To dance a waltz.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Waltz \Waltz\, n. [G. walzer, from walzen to roll, revolve, dance, OHG. walzan to roll; akin to AS. wealtan. See Welter.]

A dance performed by two persons in circular figures with a whirling motion; also, a piece of music composed in triple measure for this kind of dance.

Source: Webster's Revised Unabridged Dictionary (1913)