3 [tip]
a small present of money given directly to someone for performing a service or menial task; gratuity: He gave the waiter a dollar as a tip.
a piece of private or secret information, as for use in betting, speculating, or writing a news story: a tip from a bookie.
a useful hint or idea; a basic, practical fact: tips on painting.
verb (used with object), tipped, tipping.
to give a gratuity to.
verb (used without object), tipped, tipping.
to give a gratuity: She tipped lavishly.
Verb phrases
tip off, Informal.
to supply with private or secret information; inform.
to warn of impending danger or trouble; caution beforehand: The moonshiners had been tipped off that they were about to be raided.

1600–10; perhaps special use of tip4

tipless, adjective
tippable, adjective

3. suggestion, pointer. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
tip1 (tɪp)
1.  the extreme end of something, esp a narrow or pointed end
2.  the top or summit
3.  a small piece forming an extremity or end: a metal tip on a cane
vb , tips, tipping, tipped
4.  to adorn or mark the tip of
5.  to cause to form a tip
[C15: from Old Norse typpa; related to Middle Low German, Middle Dutch tip]

tip2 (tɪp)
vb (usually foll by over or up) , tips, tipping, tipped
1.  to tilt or cause to tilt
2.  to tilt or cause to tilt, so as to overturn or fall
3.  (Brit) to dump (rubbish, etc)
4.  tip one's hat to take off, raise, or touch one's hat in salutation
5.  the act of tipping or the state of being tipped
6.  (Brit) a dump for refuse, etc
[C14: of uncertain origin; related to top1, topple]

tip3 (tɪp)
1.  a payment given for services in excess of the standard charge; gratuity
2.  a helpful hint, warning, or other piece of information
3.  a piece of inside information, esp in betting or investing
vb , tips, tipping, tipped
4.  to give a tip to (a person)
[C18: perhaps from tip4]

tip4 (tɪp)
vb , tips, tipping, tipped
1.  to hit or strike lightly
2.  to hit (a ball) indirectly so that it glances off the bat in cricket
3.  a light blow
4.  a glancing hit in cricket
[C13: perhaps from Low German tippen]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

"to slope, overturn," c.1300, possibly from Scand., or a special use of tip (n.). Intransitive sense of "fall over" is recorded from 1530.

"end, point, top," early 13c., from M.L.G. or M.Du. tip "utmost point, extremity, tip" (cf. Ger. zipfel, a dim. formation); perhaps cognate with O.E. tæppa "stopper" (see tap (n.)), from P.Gmc. *tupp- "upper extremity." Tip-toe (n.) is late 14c.; tip-top is from 1702.

"give a small present of money to," 1610, "to give, hand, pass," originally thieves' cant, perhaps from tip (v.3) "to tap." The meaning "give a gratuity to" is first attested 1706. The noun in this sense is from 1755; the meaning "piece of confidential information" is from 1845;
the verb in this sense is from 1883; tipster first recorded 1862.

"light, sharp blow or tap," c.1466, possibly from Low Ger. tippen "to poke, touch lightly," related to M.L.G. tip "end, point," and thus connected to tip (n.); or else connected with tap (v.) "to strike lightly." The noun in this sense is attested from 1567.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
  1. technology investment plan

  2. total inorganic phosphate

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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