For·ti·fy v. t. [imp. & p. p. Fortified p. pr. & vb. n. Fortifying.]
 1. To add strength to; to strengthen; to confirm; to furnish with power to resist attack.
    Timidity was fortified by pride.   --Gibbon.
    Pride came to the aid of fancy, and both combined to fortify his resolution.   --Sir W. Scott.
 2. To strengthen and secure by forts or batteries, or by surrounding with a wall or ditch or other military works; to render defensible against an attack by hostile forces.


 fortifying
      adj : invigorating physically or mentally [syn: strengthening]