We use 'shallow' in swimming to say someone is not going deep underwater. It can mean a small jump into water.
He took a shallow dive into the pool.
Swim in the shallow water near shore.
In medicine, 'shallow' describes wounds or cuts that do not go deep into the body. These are usually less serious.
The doctor saw only a shallow wound.
The shallow cut healed quickly.
The noun 'shallow' means a place in water where it is not deep. People or animals can stand or swim there easily.
We found a shallow for swimming.
The boat stopped at the shallow near shore.
We say a voice or sound is 'shallow' if it does not have a full or rich tone. It sounds thin or weak.
His shallow voice was hard to hear.
The shallow sound came from the old radio.
