Wordnet 3.0
VERB (1)
1. 
 make a counterattack and return like for like, especially evil for evil; 
- Example: "The Empire strikes back"- Example: "The Giants struck back and won the opener"- Example: "The Israeli army retaliated for the Hamas bombing"[syn: retaliate, strike back]
WordNet (r) 3.0 (2006):
strike back
    v 1: make a counterattack and return like for like, especially
         evil for evil; "The Empire strikes back"; "The Giants
         struck back and won the opener"; "The Israeli army
         retaliated for the Hamas bombing" [syn: retaliate,
         strike back]