Pronunciation: (mok'u-sin, -zun),[key] —n. 1. a heelless shoe made entirely of soft leather, as deerskin, with the sole brought up and attached to a piece of u-shaped leather on top of the foot, worn originally by the American Indians.
2. a hard-soled shoe or slipper resembling this, often decorated with beads.
3. any of several North American snakes of the genus Agkistrodon (Ancistrodon), esp. the cottonmouth.