Emily Dickinson Lexicon

FOR'TI-FY, v.t. [Fr. fortifier; Sp. fortificar; It. fortificare.]

1. To surround with a wall, ditch, palisades or other works with a view to defend against the attacks of an enemy; to strengthen and secure by forts, batteries and other works of art; as, to fortify a city, town or harbor.
2. To strengthen against any attack; as, to fortify the mind, against any sudden calamity.
3. To confirm; to add strength and firmness to; as, to fortify an opinion or resolution; to fortify hope or desire.
4. To furnish with strength or means of resisting force, violence or assault.