tail fin

noun

1. caudal fin.
2. Automotive. fin17

Word History and Origins

Origin of tail fin¹

First recorded in 1675–85

Example Sentences

The model, which applies to many fish species, simulates one to nine mackerel being propelled forward by their tail fins.

From Science Daily

The rudder is a movable panel on a jet’s vertical tail fin that can deflect to one side so the air pressure on the panel turns the plane’s nose to the right or left.

From Seattle Times

He was fired last year for allegedly failing to conduct inspections that were his responsibility, resulting in faulty tail fin fittings being shipped to Boeing.

From Seattle Times

If the door plug that blew off had struck and damaged the horizontal tail or the tail fin, the pilots could have lost control and the jet could have crashed.

From Seattle Times

"None has four large flippers they use in conjunction with a tail fin."

From Science Daily