n. & v.
n. 1 a dishonest or unprincipled person. 2 joc. a mischievous person, esp. a child. 3 (usu. attrib.) a a wild animal driven away or living apart from the herd and of fierce temper (rogue elephant). b a stray, irresponsible, or undisciplined person or thing (rogue trader). 4 an inferior or defective specimen among many acceptable ones.
v.tr. remove rogues (sense 4 of n.) from. rogues' gallery a collection of photographs of known criminals etc., used for identification of suspects.
[ 16th-c. cant word: orig. unkn. ]