shake a leg

shake a leg idiom
  1. Dance, as in Whenever there was music he was eager to shake a leg. [Colloquial; first half of 1800s]
  2. Hurry up, as in Shake a leg or we'll miss the plane. [Colloquial; first half of 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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