(shōl) noun
1. A shallow place in any body of water.
2. A sandbank or bar, especially one seen at low water. Compare BANK and REEF.
—v.i.
1. To become shallow.
—v.t.
2. To make shallow.
3. To sail into a lesser depth of (water), as shown by soundings: The ship shoaled her water off Cape Hatteras.
—adjective Of little depth; shallow. Also, Scot., shaul. [OE sceald shallow]

(shōl) noun
An assemblage or multitude; throng, as of fish.
—v.i.
1. To throng in shoals or multitudes.
2. To school: said of fish. [OE scolu shoal of fish. Akin to SCHOOL².]