adjective
Definition: Describing a body of water that is not deep, where the bottom can be easily seen or reached.
Example: The shoal water made it easy for the children to play safely.
intransitive verb
Definition: To become shallow or to gather in large numbers, often referring to fish or other animals.
Example: The fish shoal together near the coral reef during the summer months.
noun
Definition: A large group of fish or other marine animals, or a shallow area in a body of water that can be dangerous for boats.
Example: The fishermen found a shoal of fish near the reef.
transitive verb
Definition: To make a body of water shallower, often by causing sediment to accumulate or by moving into a shallower area.
Example: The boat shoaled as it approached the shore, making it difficult to navigate.