(computer security) An attempt to subvert security by recording legitimate communications and repeating them to try to impersonate a valid user.

(netball) A player allowed in the centre third, goal third including the shooting circle.

(netball) A player allowed in the centre third and goal third, but not the shooting circle.

(cryptography) A covert method of decryption exploiting the so-called birthday paradox.

(fencing) An attack consisting of more than one feint.

plural of asthma attack

plural of counter-attack

Third-person singular simple present indicative form of counter-attack

(medicine) An incident wherein a person who suffers intermittent experiences of bronchioconstriction undergoes such an experience, usually with a sudden onset.

(military) An attack in which two or more forces attack from multiple sides at once.