Wiktionary
leg work
n. (alternative spelling of legwork English)
Wikipedia
Leg Work
Leg Work is an American detective drama television series created by Frank Abatemarco that premiered on CBS on October 3, 1987. 10 episodes of the series were produced, of which six were aired prior to the show's cancellation. The final episode aired on November 7, 1987. The cable network TV Land later aired the remaining four episodes.
Usage examples of "leg work".
It had taken several weeks, dozens of phone calls, and a massive amount of leg work to accumulate the information he was now sifting through.