Tickle

tiki, v. t. [-led (-Id), -ling.] To touch ly, so as to cause a peculiar thrilling sensation, which commonly causes laughter; to please by gratification. — v. i. To feel titillation; to excite sensation of titillation. —Ticklish, a. Sensible sight touches; easily tickled; standing so as liable to fall at the slightest touch: difficult: critical.