Definition of Itch

Verb: itch ich

Scrape with the fingers as if to relieve itching
"Don't itch your insect bites!";
- rub, scratch
Have or perceive an itch
"I'm itching--the air is so dry!"
Cause to perceive an itch
"his skin itched"
Have a strong desire or urge to do something
"She is itching to start the project";
- spoil

Noun: itch ich

A contagious skin infection caused by the itch mite; characterized by persistent itching and skin irritation
"he has a bad case of the itch";
- scabies
A strong restless desire
"why this itch to travel?";
- urge
An irritating cutaneous sensation that produces a desire to scratch
- itchiness, itching