To save this word, you'll need to log in.
\ ˈnit 
\
\Definition of nit
(Entry 1 of 3)
1 : the egg of a louse or other parasitic insect also : the insect itself when young
2 : a minor shortcoming
nit
noun (2)Definition of nit (Entry 2 of 3)
chiefly British
: nitwit
NIT
abbreviationDefinition of NIT (Entry 3 of 3)
National Invitational Tournament
Keep scrolling for more
Keep scrolling for more
More Definitions for nit
nit
noun\ ˈnit \
\Kids Definition of nit
: the egg of a louse
nit
noun\ ˈnit \
\Medical Definition of nit
: the egg of a louse or other parasitic insect also : the insect itself when young
Keep scrolling for more
Comments on nit
What made you want to look up nit? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Semantic Drift Quiz
- Which of the following was once a synonym for fun?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share nit
Time Traveler for nit
The first known use of nit was before the 12th century
See more words from the same century