Definitions

1. noun

A type of bird, especially the Eurasian and American golden-eyes, or a hole in the ground, typically made by a bird such as a moorhen or a coot.

“The culver of the moorhen was an important habitat for the local ecosystem.”

2. noun

A device for filtering or purifying liquids, especially a chamber in which a liquid is clarified by passing it through a porous medium.

“The water treatment plant included a series of culvers to remove impurities.”