a shoe made of deerskin, or other soft leather, the sole and upper part being one piece. it is the customary shoe worn by the american indians.-a poisonous snake of the southern united states. the water moccasin (ancistrodon piscivorus) is usually found in or near water. above, it is olive brown, barred with black; beneath, it is brownish yellow, mottled with darker. the upland moccasin is ancistrodon atrofuscus. they resemble rattlesnakes, but are without rattles.