'Two-step' definitions:

Definition of 'two-step'

From: WordNet
noun
A ballroom dance in duple meter; marked by sliding steps
verb
Dance the two-step

Definition of 'Two-step'

From: GCIDE
  • 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.]