fortify

fortify is a   Verb

Definition:

[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.

Synonyms: