I. noun
1.
Synonyms: defense 1, aegis, armament, armor, protection, safeguard, security, shield, ward
2.
a person or group on sentinel duty
posted six guards around the diamond necklace
turned out the guard
Synonyms: lookout, picket, sentinel, sentry, ward, watch, watchman
Related Word: guardian, jailer, keeper, turnkey, warden, warder; patrolman; outguard, patrol
II. verb
Synonyms: defend 1, bulwark, cover, fend, protect, safeguard, screen, secure, shield
Related Word: attend, mind, tend, watch; accompany, chaperon, conduct, convoy, escort