1. A lightweight shoe or slipper made of soft leather and typically worn by native North American Indians: Virginia loves to wear her moccasins as slippers after her mother bought them in an Indian store during the family's last trip to Canada.

The top of the moccasin is olive brown and black, while underneath, it is a brownish yellow color.
2. A poisonous water snake (Ancistrodon piscivorus) in the Southern United States:

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 the photos in their text books at school.