NOUN (1)

1. a jerky American dance that was popular in the 1940s;


VERB (1)

1. do the jitterbug;

The Collaborative International Dictionary of English v.0.48:

jitterbug \jitterbug\ n.
   a fast and vigorous American dance that was popular in the
   1940s, having few standardized steps and personalized with
   various twirls, twists, and acrobatic moves; it was performed
   often to the accompaniment of swing or boogie-woogie tunes.
   [WordNet 1.5 +PJC]

The Collaborative International Dictionary of English v.0.48:

jitterbug \jitterbug\ v. i.
   to do the jitterbug.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

jitterbug
    n 1: a jerky American dance that was popular in the 1940s
    v 1: do the jitterbug