noun

1. A sandbank or sandbar creating a shallow.

2. A shallow in a body of water.

Synonyms: sandbank, sandbar

verb

1. To arrive at a shallow (or less deep) area.

2. To cause a shallowing; to come to a more shallow part of.

3. To become shallow.

   “The colour of the water shows where it shoals.”

adjective

1. Shallow.

   “shoal water”