Definitions

1. noun

A thin, rigid plate or projection, typically at the end of a fish’s body, used for balance or propulsion through water.

“The shark’s sharp fin sliced through the ocean surface.”

2. noun

A part of a building, especially a wall or a projection, that is decorated with carved or molded designs.

“The medieval cathedral’s Gothic fin was adorned with intricate stone carvings.”

3. verb

To furnish or equip (a building) with a fin or fins.

“The architects decided to fin the skyscraper with a dramatic, angular design.”

4. verb

To fit (a fish) with a fin or fins.

“The aquarium staff needed to fin the new fish before releasing it into the exhibit.”