Definitions
1.NounA sensation felt on an area of the skin that causes a person or animal to want to scratch said area.
2.NounA constant teasing desire or want.
3.VerbTo feel itchy; to feel a need to be scratched.
4.VerbTo have a constant, teasing urge; to feel strongly motivated; to want or desire something."He started learning to drive and he has been itching for opportunities to practice ever since."
5.VerbTo cause to feel an itch.
6.VerbTo scratch or rub so as to relieve an itch.