tickle

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To touch (the body) lightly so as to cause laughter or twitching movements.
2. v. To tease or excite pleasurably; titillate: suspense that tickles the reader's curiosity.
3. v. To fill with mirth or pleasure; delight. See Synonyms at please.
4. v. To feel or cause a tingling sensation.
5. n. The act of tickling.
6. n. A tickling sensation.
7. idiom. tickled pink Informal Very pleased; delighted: I was tickled pink by the compliment.

Century Dictionary and Cyclopedia

1. n. A narrow passage or entrance to a harbor.
2. To tease with repeated light touches in some sensitive part, so as to excite the nerves, thereby producing a peculiar thrilling sensation which commonly results in spasmodic laughter, or, if too long continued, in a convulsion; titillate.
3. To touch, affect, or excite agreeably; gratify; please or amuse by gentle appeals to one's imagination, sense of humor, vanity, or the like.
4. To take, move, or produce by touching lightly.
5. To feel titillation: as, his foot tickled.
6. To tingle pleasantly; thrill with gratification or amusement.
7. To have an impatient or uneasy desire to do or to get something; itch; tingle.
8. To produce the sensation of titillation, or the slight nervous excitement of a light touch on some sensitive part.
9. Easily moved; unsteady; unstable; inconstant.
10. n. A light teasing touch in some sensitive part; a gentle tickling act or action.

Wiktionary

1. n. The act of tickling.
2. n. A feeling resembling the result of tickling.
3. n. Newfoundland A narrow strait.
4. v. transitive To touch repeatedly or stroke delicately in a manner which causes the recipient to feel a usually pleasant sensation of tingling or titillation.
5. v. intransitive, of a body part To feel as if the body part in question is being tickled.
6. v. transitive To appeal to someone's taste, curiosity etc.
7. v. transitive To cause delight or amusement.
8. adj. Changeable, capricious; insecure.

GNU Webster's 1913

1. v. To touch lightly, so as to produce a peculiar thrilling sensation, which commonly causes laughter, and a kind of spasm which become dengerous if too long protracted.
2. v. To please; to gratify; to make joyous.
3. v. To feel titillation.
4. v. To excite the sensation of titillation.
5. adj. obsolete Ticklish; easily tickled.
6. adj. obsolete Liable to change; uncertain; inconstant.
7. adj. obsolete Wavering, or liable to waver and fall at the slightest touch; unstable; easily overthrown.

WordNet 3.0

1. v. touch (a body part) lightly so as to excite the surface nerves and cause uneasiness, laughter, or spasmodic movements
2. n. the act of tickling
3. v. touch or stroke lightly
4. n. a cutaneous sensation often resulting from light stroking
5. v. feel sudden intense sensation or emotion