Top definition
The knuckle shaped formation at the base of your thumb.
"What happened to your thuckle? You have a cut there."
by Buddhasoft January 17, 2010
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May 12 Word of the Day
When someone goes to the gym and spends 90% of the time on their phones scrolling through social media
Looks like its thumb day again for Jimmy with his usual routing... 3 sets of 5 snapchat selfies and 10 sets of scrolling through facebook until exhaustion
by Gary br April 02, 2017
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2
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
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