Webster's Revised Unabridged Dictionary · 1913

Scut

Scut , noun

[Compare Icelandic skott a fox's tail. r 159.]

The tail of a hare, or of a deer, or other animal whose tail is short, esp. when carried erect; hence, sometimes, the animal itself. [Obsolete]
He ran like a scut. — Skelton
How the Indian hare came to have a long tail, whereas that part in others attains no higher than a scut. — Sir T. Browne
My doe with the black scut. — Shakespeare