Definition of thumbhole
1
: an opening in which to insert the thumb
2
: a hole in a wind musical instrument opened or closed by the thumb
Keep scrolling for more
Test Your Vocabulary
Who Knew?
-
- What is a ruelle?

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
Spell words. Make bears.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share thumbhole
Time Traveler for thumbhole
The first known use of thumbhole was in 1859
See more words from the same year