main

(verb): Short for mainline.
(verb): To mainly play a specific character, or side, during a game.
(verb): Of a road: to convert into a main or primary road.
(adjective): Of chief or leading importance; prime, principal.
(adjective): Chief, most important, or principal in extent, size, or strength; consisting of the largest part.
(adjective): (of force, strength, etc.) Full, sheer, undivided.
(adjective): Big; angry.
(adjective): Belonging to or connected with the principal mast in a vessel.
(adjective): Great in size or degree; important, powerful, strong, vast.
(adverb): Exceedingly, extremely, greatly, mightily, very, very much.