WordWeb Online

1. An attack by a defending force against an attacking enemy force in order to regain lost ground or cut off enemy advance units etc.
   - countermove
    
2. (chess) an attack that is intended to counter the opponent's advantage in another part of the board
   - counterplay

1. Make a counterattack
   - counterstrike

Derived forms: counterattacked, counterattacking, counterattacks

Type of: assail, attack, onrush, onset, onslaught

Encyclopedia: Counterattack