#1 defend v. [support, fend for] argue or speak in defense of; "She supported the motion to strike". wn
#2 defend v. be on the defensive; act against an attack. wn
#3 defend v. [guard, hold] protect against a challenge or attack; "Hold that position behind the trees!"; "Hold the bridge against the enemy's attacks". wn
#4 defend v. [fight, oppose, fight back, fight down] fight against or resist strongly; "The senator said he would oppose the bill"; "Don't fight it!". wn
#5 defend v. [champion] protect or fight for as a champion. wn
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