Origin of tail fin
Definition for tail fin (2 of 2)
- a horizontal, often adjustable, winglike appendage to the underwater portion of a hull, as one for controlling the dive of a submarine or for damping the roll of a surface vessel.
- fin keel.
verb (used with object), finned, fin·ning.
verb (used without object), finned, fin·ning.
Origin of fin1
Related formsfin·less, adjectivefin·like, adjective
Examples from the Web for tail fin
The tail-fin, which is deepest at mid-length, extends to the back of the head and is flecked with brown.
In small larvae the outer edge of the tail-fin is dark brown.
The tail shortens and finally disappears in the frogs and toads; with the salamanders the tail-fin only is lost.Elementary Zoology, Second Edition|Vernon L. Kellogg
The reader will see from the figure that the tail-fin is very large, and the backbone appears to run into the lower lobe.Extinct Monsters|H. N. Hutchinson
She is said to have a hand as large as the tail-fin of a whale, and if she strikes you with it there is an end of you.Eskimo Life|Fridtjof Nansen
British Dictionary definitions for tail fin (1 of 4)
British Dictionary definitions for tail fin (2 of 4)
British Dictionary definitions for tail fin (3 of 4)
- British a vertical surface to which the rudder is attached, usually placed at the rear of an aeroplane to give stability about the vertical axisUS name: vertical stabilizer
- a tail surface fixed to a rocket or missile to give stability