An abbreviation of fortification.
Strong.
Tipsy.
noun.
A strong place of defense; a fortified building or inclosure; especially, an armed place for a garrison, provided with defensive works, for the protection of a town, harbor, frontier, or other point against the approach or passage of hostile forces.
noun.
A trading-post among the North American Indians, whether fortified or not.
noun.
Same as forte, 1.
To occupy a fort.