Thuckle

Your thumb knuckle.

When you are playing ping-pong and need an excuse for why you missed an important shot.

You: *misses shot* “whoops, I hit my thuckle.

by AustinPat96 April 14, 2021

Thuckle

The knuckle shaped formation at the base of your thumb.

"What happened to your thuckle? You have a cut there."

by Buddhasoft January 18, 2010