1. A lightweight shoe or slipper made of soft leather and typically worn by native North American Indians: "Mary loves to wear her moccasins as slippers after her mother bought them in an Indian store during the family's last trip to Canada."
2. A poisonous water snake (Ancistrodon piscivorus) in the Southern United States: "The top of the moccasin is olive brown and black, while underneath, it is a brownish yellow color."

"The moccasin is similar to a rattlesnake, but it does not have rattles."

"Finally, the biology class went on a field trip to the zoo where they could see a real moccasin, not just those in their text books at school."