(1):

(n.) Anything taken from an enemy in retaliation.

(2):

(n.) The act of taking from an enemy by way of reteliation or indemnity.

(3):

(n.) The act of retorting on an enemy by inflicting suffering or death on a prisoner taken from him, in retaliation for an act of inhumanity.

(4):

(n.) Any act of retaliation.