Search moccasin moccasin /mok′äsin/ , any of several species of snakes of the genus Agkistrodon. Water moccasin (John Willson at the Savannah River Ecology Laboratory [SREL]) Tweet Telegram VK Random Words inferior pole of kidney posterior circumflex humeral artery -pride acrocentric self-defeating personality disorder undulant culture shock C2H4 kilometer (km)