nit
/nɪt/
noun
- The egg or young form of a louse (a small parasitic insect), often found in hair.
- She used a special comb to remove nits from her daughter's hair.
- The school nurse checked each child's hair for nits after the outbreak.
- Nits are tiny and can be hard to see without a bright light.
- A foolish or stupid person (informal, British).
- Don't be such a nit — you left your keys in the door again!
- He felt like a nit after forgetting his friend's birthday.
- Only a nit would try to cross the street without looking.