The Collaborative International Dictionary of English v.0.48:

Tip \Tip\, v. t. [imp. & p. p. Tipped; p. pr. & vb. n.
   Tipping.]
   To form a point upon; to cover the tip, top, or end of; as,
   to tip anything with gold or silver.
   [1913 Webster]

         With truncheon tipped with iron head.    --Hudibras.
   [1913 Webster]

         Tipped with jet,
         Fair ermines spotless as the snows they press.
                                                  --Thomson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tip \Tip\, v. t. [Cf. LG. tippen to tap, Sw. tippa, and E. tap
   to strike gently.]
   1. To strike slightly; to tap.
      [1913 Webster]

            A third rogue tips me by the elbow.   --Swift.
      [1913 Webster]

   2. To bestow a gift, or douceur, upon; to give a present to;
      as, to tip a servant. [Colloq.] --Thackeray.
      [1913 Webster]

   3. To lower one end of, or to throw upon the end; to tilt;
      as, to tip a cask; to tip a cart.
      [1913 Webster]

   To tip off, to pour out, as liquor.

   To tip over, to overturn.

   To tip the wink, to direct a wink; to give a hint or
      suggestion by, or as by, a wink. [Slang] --Pope.

   To tip up, to turn partly over by raising one end.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tip \Tip\, n. [Akin to D. & Dan. tip, LG. & Sw. tipp, G. zipfel,
   and probably to E. tap a plug, a pipe.]
   1. The point or extremity of anything; a pointed or somewhat
      sharply rounded end; the end; as, the tip of the finger;
      the tip of a spear.
      [1913 Webster]

            To the very tip of the nose.          --Shak.
      [1913 Webster]

   2. An end piece or part; a piece, as a cap, nozzle, ferrule,
      or point, applied to the extreme end of anything; as, a
      tip for an umbrella, a shoe, a gas burner, etc.
      [1913 Webster]

   3. (Hat Manuf.) A piece of stiffened lining pasted on the
      inside of a hat crown.
      [1913 Webster]

   4. A thin, boarded brush made of camel's hair, used by
      gilders in lifting gold leaf.
      [1913 Webster]

   5. Rubbish thrown from a quarry.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tip \Tip\, v. i.
   To fall on, or incline to, one side. --Bunyan.
   [1913 Webster]

   To tip off, to fall off by tipping.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tip \Tip\, n. [See Tip to strike slightly, and cf. Tap a
   slight blow.]
   1. A light touch or blow; a tap.
      [1913 Webster]

   2. A gift; a douceur; a fee. [Colloq.]
      [1913 Webster]

   3. A hint, or secret intimation, as to the chances in a horse
      race, or the like. [Sporting Cant]
      [1913 Webster]

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"

Moby Thesaurus II by Grady Ward, 1.0:

320 Moby Thesaurus words for "tip":
   Thule, Trinkgeld, Ultima Thule, acme, aculeus, acumination,
   admonish, advice, advise, alert, alerting, alveolar ridge,
   alveolus, angularity, apex, apogee, arytenoid cartilages, ascend,
   auger, back, baksheesh, balance, bank, beak, bit, bitter end,
   blade, bonnet, bonus, bonus system, borer, bottom dollar, boundary,
   bounty, breathe, bribe, brow, brush, bunt, butt, butt end, buzz,
   cant, cap, capsize, careen, caution, ceil, chuck, climax, climb,
   cloud nine, clue, coif, confide, confide to, consideration,
   consummate, cork, creep, crest, crown, cry havoc, cue, culbuter,
   culmen, culminate, culmination, cusp, dab, decline, deposit,
   descend, dip, ditch, dividend, dome, donative, dorsum, double time,
   drill, drop, dump, edge, empty, end, entrust with information,
   extra, extreme, extreme limit, extremity, fag end, fall, fall away,
   fall off, farthest bound, fee, ferrule, ferule, fillip, finial,
   flick, flip, flirt, forecast, forewarn, fringe benefit, frost, gen,
   gift, give confidential information, give fair warning,
   give notice, give warning, go downhill, go uphill, grade, gratuity,
   gravy, graze, grease, hard palate, hat, head, heaven, heavens,
   heel, height, high noon, highest pitch, highest point, hint,
   honorarium, hood, ice, incentive pay, inclination, incline,
   inducement, information, inside information, issue an ultimatum,
   jumping-off place, keel, keel over, knock over, lagniappe, largess,
   larynx, lay down, lean, leaning, leaning tower, leftover,
   let in on, let next to, liberality, lie along, limit, lips, list,
   margin, maximum, mention privately, meridian, mince, monition,
   mountaintop, mucro, nasal cavity, ne plus ultra, neb, needle, nib,
   no place higher, noon, notify, office, oral cavity, outtop,
   overage, overarch, overmeasure, overplus, overrun, overset,
   overstock, oversupply, overthrow, overtime pay, overtop, overturn,
   palate, palm, palm oil, passing word, pat, peak, peck, perks,
   perquisite, perquisites, pharyngeal cavity, pharynx, pick,
   piece of advice, pinnacle, pitch, plus, point, pointer, pole,
   pourboire, prediction, premium, present, prick, prickle, pussyfoot,
   put hep, put next to, rake, rap, recline, remainder, retreat,
   reward, ridge, rise, roof, roof in, salve, sap, seventh heaven,
   shelve, sidle, sky, slant, slope, snap, soft palate, solatium,
   something extra, sound the alarm, spare, speech organ, spire,
   sportula, steal, steer, sting, stopper, stub, stump, subvert,
   suggestion, summit, surmount, surplus, surplusage, swag, sway,
   sweetener, syrinx, tag, tag end, tail, tail end, tap, teeth,
   teeth ridge, terminal, threaten, tickle, tilt, tip off, tip over,
   tip-off, tip-top, toe, tongue, top, top off, topple over,
   topsy-turvify, topsy-turvy, touch, tower of Pisa,
   turn a somersault, turn over, turn topsy-turvy, turn turtle,
   turn upside down, unload, upmost, upper extremity, uppermost,
   uprise, upset, upturn, utmost, utter a caveat, velum, verb,
   verbum sap, verbum sapienti, vertex, very top, vocal chink,
   vocal cords, vocal folds, vocal processes, voice box, warn,
   warn against, warning, whisk, whisper, word of advice, zenith



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

TIP
       Terminal Interface Processor (ARPANET)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

TIP
       Transputer Image Processing


The Free On-line Dictionary of Computing (30 December 2018):

TIP

   1. Texas Instruments Pascal.

   2. A Unix program for interactive communication via serial
   lines.

   Unix manual page: tip(1).