shoals

A person who stands on a rock or eminence to espy the shoals of herring, etc., and to give notice to the men in boats which way they pass

a tower with a light that gives warning of shoals to passing ships v

n a fire (usually on a hill or tower) that can be seen from a distance n a radio station that broadcasts a directional signal for navigational purposes n a tower with a light that gives warning of shoals to passing ships v shine like a beacon v guide with a beacon

One who watches shoals of fish

n a tower with a light that gives warning of shoals to passing ships