cowskin

plural cowskins

1. countableuncountableLeather made from the hide of a cow or similar animal.
2. countableuncountableA whip made of that material.

   Mr. Plummer was a miserable drunkard, a profane swearer, and a savage monster. He always went armed with a cowskin and a heavy cudgel.

   1846 [1845], Frederick Douglass, Narrative of the Life of Frederick Douglass, an American Slave, Boston: Anti-Slavery Office, page 5