= small type of lizard about 10 centimeters (4 inches) long with pads at the end of its toes with small hairs, enabling it to walk upside down on ceilings and overhangs; only type of lizard that produces sound; Hemidactylus turcicus, or a general word for all kinds of gecko; some varieties of geckos are often found inside buildings; feeds on insects; unclean animal and therefore not to be eaten