A pot-shaped hole in a pavement surface.

1. A shaftlike cave opening upward to the surface.

2. Any bowl-shaped, cylindrical, or circular hole formed by the grinding action of a stone in the rocky bed of a river or stream. Also known as churn hole; colk; eddy mill; evorsion hollow; kettle; pot.

3. A vertical, or nearly vertical shaft in limestone. Also known as aven; cenote.

4. A small depression with steep sides in a coastal marsh; contains water at or below low-tide level. Also known as rotten spot.

See <<moulin>>