Definitions

1. noun

A small, usually freshwater or brackish, pool of water, especially one that is rich in aquatic life.

“The researcher spent her summer studying the unique ecosystem of a biod in the forest.”

2. noun

A small, enclosed or partially enclosed body of water, especially one that is rich in aquatic life, found in a natural or man-made depression, such as a bog, marsh, or pond.

“The park’s biod is home to a variety of birds and fish species.”