From WordNet (r) 3.0 (2006):
tip
n 1: the extreme end of something; especially something pointed
2: a relatively small amount of money given for services
rendered (as by a waiter) [syn: gratuity, tip,
pourboire, baksheesh, bakshish, bakshis,
backsheesh]
3: an indication of potential opportunity; "he got a tip on the
stock market"; "a good lead for a job" [syn: tip, lead,
steer, confidential information, wind, hint]
4: a V shape; "the cannibal's teeth were filed to sharp points"
[syn: point, tip, peak]
5: the top or extreme point of something (usually a mountain or
hill); "the view from the peak was magnificent"; "they
clambered to the tip of Monadnock"; "the region is a few
molecules wide at the summit" [syn: peak, crown, crest,
top, tip, summit]
v 1: cause to tilt; "tip the screen upward"
2: mark with a tip; "tip the arrow with the small stone"
3: give a tip or gratuity to in return for a service, beyond the
compensation agreed on; "Remember to tip the waiter"; "fee
the steward" [syn: tip, fee, bung]
4: cause to topple or tumble by pushing [syn: topple,
tumble, tip]
5: to incline or bend from a vertical position; "She leaned over
the banister" [syn: lean, tilt, tip, slant, angle]
6: walk on one's toes [syn: tiptoe, tip, tippytoe]
7: strike lightly; "He tapped me on the shoulder" [syn: tap,
tip]
8: give insider information or advise to; "He tipped off the
police about the terrorist plot" [syn: tip off, tip]
9: remove the tip from; "tip artichokes"