Definition of: tickle

(tik′əl) v. ·led, ·ling v.t.
1. To excite the nerves of by touching or scratching on some sensitive spot, producing a thrilling sensation resulting in spasmodic laughter or twitching; titillate.
2. To arouse or excite agreeably; please: Compliments tickle our vanity.
3. To amuse or entertain; delight.
4. To move, stir, or get by or as by tickling.
—v.i.
5. To have or experience a thrilling or tingling sensation: My foot tickles.
—noun The sensation produced by tickling; titillation; also, the touch or action producing such sensation. [ME tikelen,? metathetic var. of ON kitla tickle]