Strong's:κνήθω to scratch, i.e. (by implication) to tickleDerivation: from a primary κνάω (to scrape);KJV Usage: X itching.
TBESG:κνήθωto itchG:V κνήθω (late form of κνάω), __1. to scratch. __2. to tickle; pass., to itch: 2Ti.4:3.† (AS)
κνήθω knēthō knay'-tho From a primary word κνάω knaō (to scrape); to scratch, that is, (by implication) to tickleKJV Usage: X itching.