1. The act of attacking, or falling on with force or violence; an onset; an assault; — opposed to defense.

2. An assault upon one's feelings or reputation with unfriendly or bitter words.

3. A setting to work upon some task, etc.

4. An access of disease; a fit of sickness.

5. The beginning of corrosive, decomposing, or destructive action, by a chemical agent.

ATTACKABLE
At*tack"a*ble, a.

Defn: Capable of being attacked.

ATTACKER
At*tack"er, n.

Defn: One who attacks.

ATTAGAS; ATTAGEN
At"ta*gas, At"ta*gen, n. Etym: [L. attagen a kind of bird, Gr.
(Zoöl.)