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Meaning of legwork

leg•work

Pronunciation: (leg'wûrk"), [key]
— n.
  1. work or research involving extensive walking or traveling about, usually away from one's office, as in gathering data for a book, a legal action, etc.
  2. action of the legs as executed by an athlete, dancer, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.