any of a family (Gekkonidae) of soft-skinned, insect-eating, tropical and subtropical lizards with a short, stout body, a large head, and suction pads on the feet
See gecko in American Heritage Dictionary 4
(gĕkˈō)
nounpl.geck·os or geck·oes
Any of various usually small tropical and subtropical lizards of the family Gekkonidae, having toes padded with setae containing numerous suction cups that enable them to climb on vertical surfaces.