Noun

• S: (n) roach (a roll of hair brushed back from the forehead)
• S: (n) roach (the butt of a marijuana cigarette)
• S: (n) R-2, Mexican valium, rophy, rope, roofy, roach, forget me drug, circle (street names for flunitrazepan)
• S: (n) cockroach, roach (any of numerous chiefly nocturnal insects; some are domestic pests)
• S: (n) roach, Rutilus rutilus (European freshwater food fish having a greenish back)

Verb

• S: (v) roach (comb (hair) into a roach)
• S: (v) roach (cut the mane off (a horse))