Emily Dickinson Lexicon

FORT, n. [Fr. fort; It. and Port. forte; Sp. fuerte; fuerza; L. fortis, strong.]

1. A fortified place; usually, a small fortified place; a place surrounded with a ditch, rampart, and parapet, or with palisades, stockades, or other means of defense; also, any building or place fortified for security against an enemy; a castle.
2. A strong side; opposed to weak side or foible.