NOUN (1)

1. a ballroom dance in duple meter; marked by sliding steps;


VERB (1)

1. dance the two-step;

The Collaborative International Dictionary of English v.0.48:

Two-step \Two"-step`\, n.
   A kind of round dance in march or polka time; also, a piece
   of music for this dance. [U. S.]
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

two-step
    n 1: a ballroom dance in duple meter; marked by sliding steps
    v 1: dance the two-step