legman

[ leg-man, -muh n ]
/ ˈlɛgˌmæn, -mən /

noun, plural leg·men [leg-men, -muh n] /ˈlɛgˌmɛn, -mən/.

a person employed to transact business outside an office, especially on behalf of one whose responsibilities require his or her presence in the office.
Journalism. a reporter who gathers information by visiting news sources or by being present at news events.
Compare district man.

Origin of legman

1920–25. Americanism; leg + man1

British Dictionary definitions for leg man

legman
/ (ˈlɛɡmən) /

noun plural -men mainly US and Canadian

a newsman who reports on news stories from the scene of action or original source
a person employed to run errands, collect information, etc, outside an office