tickling (Adjective) — Exciting by touching lightly so as to cause laughter or twitching movements.
tickling (Noun) — The act of tickling.
tickling (Verb) — Touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements.
tickling (Verb) — Feel sudden intense sensation or emotion. ex. "he was tickled by the speed and the roar of the engine"
tickling (Verb) — Touch or stroke lightly. ex. "The grass tickled her calves"
tickling (Verb) — Appeal to someone's taste, curiosity etc..