We don't have synonyms for legmen yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are legman, tegmen and legumen.
(n) :
(originally US) A person hired to carry out errands or (often) menial tasks, frequently requiring travel from place to place; an errand boy or errand girl, a runner.
(n) :
(originally US, journalism) A reporter who frequently travels to conduct research, interview witnesses, etc., and then conveys the information to a rewriteman who writes up the story.
(n) :
(originally US) A person hired to carry out errands or (often) menial tasks, frequently requiring travel from place to place; an errand boy or errand girl, a runner.
(n) :
(originally US, journalism) A reporter who frequently travels to conduct research, interview witnesses, etc., and then conveys the information to a rewriteman who writes up the story.