Definition of itches:
(n) :
A sensation felt on an area of the skin that causes a person or animal to want to scratch said area.
(v) :
(intransitive, stative) To feel itchy; to feel a need to be scratched.
(v) :
(transitive) To cause to feel an itch.
(v) :
(transitive, colloquial) To scratch or rub so as to relieve an itch.
(n) :
A constant teasing desire or want.
(v) :
(intransitive) To have a constant, teasing urge; to feel strongly motivated; to want or desire something.