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Gi·la mon·ster(hē'lă mon'stĕr),
A large poisonous lizard, Heloderma suspectum of New Mexico, Arizona, and northern Mexico.
[Gila, a river in Arizona]
A large stocky venomous lizard (Heloderma suspectum) of the southwest United States and western Mexico, having black and orange, pink, or yellowish beadlike scales.
Heloderma suspectum, a poisonous, legged reptile, colored brown with orange spots and a skin covered with large beadlike tubercles. Venom injected by bites causes local pain and swelling that is soon followed by vomiting, shock and depression of the central nervous system.