any of various members of wingless, bloodsucking hemipteran insects of Cimicidae family, esp. of Cimex lectularius species with a broad, flat, reddish-brown body and an unpleasant odour that infests beds, furniture, walls, etc., is active mainly at night, and may transmit a variety of diseases; a bug.

any of small, flat, wingless insects of Anoplura order with sucking mouthparts, parasitic on the hair of humans and some other mammals; a louse.

excellent character (of a person).