A Madagascar gecko.
nounpl. geck·os or geck·oes
Any of various chiefly nocturnal tropical and subtropical lizards of the family Gekkonidae, characteristically having toe pads covered with numerous tiny bristles that adhere to vertical surfaces.
Origin of geckoJavanese ge'kok.
(plural geckos or geckoes)
From Malay gekok, for the sound they make when moving.