Definition of roaches:
(n) :
(US) A cockroach.
(n) :
(US, slang, smoking) The butt of a marijuana cigarette.
(n) :
(US, slang, smoking) An entire marijuana cigarette, blunt, or joint.
(n) :
(UK, slang, smoking) The filter of a rolled cigarette or joint, made from card or paper (often of the cigarette paper packet itself).
(n) :
Certain members of the fish family Cyprinidae, including:
(n) :
Any fish of species in the genus Rutilus, especially: