/keuh myooh"teuhr/ , n.
1. a person who commutes, esp. between home and work.
adj.
2. of or for commuting; serving commuters: a commuter railroad.
3. of or pertaining to a flight, plane, or airline that carries passengers over relatively short distances and usually serves small communities.
[ 1860-65, Amer.; COMMUTE + -ER 1 ]