The most important building of a group of buildings (e.g. in a school/university).

The generic street name (and often the official name) of the primary retail street of a village, town, or small city in the United States, Canada, Ireland, some parts of Scotland and also in some countries in central Europe.

(nautical) On a wooden mast, a circular disc (or sometimes a rectangle) of wood near or at the top of the mast, usually with holes or sheaves to reeve signal halyards; also a temporary or emergency place for a lookout.

plural of water main

plural of main man

plural of main clause

(idiomatic, chiefly African-American Vernacular) One's closest male friend.

Alternative form of mainstage

plural of main diagonal

(obsolete) A venture which stands the best likelihood of success; a risk; fortune (of a person, country etc.).