legwork definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Informal routine work that is necessary to a job, as that of a news reporter, involving, typically, walking or driving from place to place, away from the office
legwork definition by American Heritage Dictionary
Work, such as collecting information or doing research in preparation for a project, that involves much walking or traveling about.