attacker

from WordNet (r) 3.0 (2006)
attacker
    n 1: someone who attacks [syn: {attacker}, {aggressor},
         {assailant}, {assaulter}]
    
from The Collaborative International Dictionary of English v.0.48
Attacker \At*tack"er\, n.
   One who attacks.
   [1913 Webster] Attagas
    

[email protected]