Finbacks [noun]

Definition of Finbacks:

cetacean mammal

● Orc

● Sei

The big sulphurbottom is a kind of finback, an' is the largest animal livin'.

Now, a finback is built more for speed an' has a big fin on the back—that's where it gets its name.

W'en I uz young 'n foolish, a finback range 'longside me one day, off de Seychelles.

I happened to be almost in at the death of the biggest finback ever taken.

This fish is termed finback on account of a fin on his back, differing in this particular from all other species of whale.

What's the difference between a 'finback' and a 'humpback,' Hank?