intransitive verb
Definition: To come to the surface of the water with the fins visible, often used to describe the movement of fish or whales.
Example: The whale began to fin, showing its fins above the water as it swam.
noun
Definition: A thin, flat part of a fish or other aquatic animal that helps it move in water, or a similar structure used for stability in various objects like aircraft or surfboards.
Example: The fish swam gracefully through the water, using its fin to steer.
transitive verb
Definition: To provide something with fins, which are flat appendages used for swimming or stability in water.
Example: The engineer decided to fin the new model of the underwater drone for better maneuverability.