Nouns

(n)ticklea cutaneous sensation often resulting from light stroking
(n)tickle, tickling, titillationthe act of tickling

Verbs

(v)tickle, titillate, vellicatetouch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements
(v)thrill, tickle, vibratefeel sudden intense sensation or emotion“he was thrilled by the speed and the roar of the engine”
(v)tickletouch or stroke lightly“The grass tickled her calves”