w sharp

Collins
World English Dictionary
sharp (ʃɑːp)
 
adj
1.  having a keen edge suitable for cutting
2.  having an edge or point; not rounded or blunt
3.  involving a sudden change, esp in direction: a sharp bend
4.  moving, acting, or reacting quickly, efficiently, etc: sharp reflexes
5.  clearly defined
6.  mentally acute; clever; astute
7.  sly or artful; clever in an underhand way: sharp practice
8.  bitter or harsh: sharp words
9.  shrill or penetrating: a sharp cry
10.  having an acrid taste
11.  keen; biting: a sharp wind; sharp pain
12.  music
 a.  (immediately postpositive) denoting a note that has been raised in pitch by one chromatic semitone: B sharp
 b.  Compare flat (of an instrument, voice, etc) out of tune by being or tending to be too high in pitch
13.  phonetics a less common word for fortis
14.  informal
 a.  stylish
 b.  too smart
15.  at the sharp end involved in the area of any activity where there is most difficulty, competition, danger, etc
 
adv
16.  in a sharp manner
17.  exactly: six o'clock sharp
18.  music
 a.  higher than a standard pitch
 b.  Compare flat out of tune by being or tending to be too high in pitch: she sings sharp
 
n
19.  music
 a.  Usual symbol: an accidental that raises the pitch of the following note by one chromatic semitone
 b.  Compare flat a note affected by this accidental
20.  a thin needle with a sharp point
21.  informal a sharper
22.  (usually plural) any medical instrument with sharp point or edge, esp a hypodermic needle
 
vb
23.  (US), (Canadian) (tr) music Usual equivalent in Britain and certain other countries): sharpen to raise the pitch of (a note), esp by one chromatic semitone
 
interj
24.  slang (South African) an exclamation of full agreement or approval
 
[Old English scearp; related to Old Norse skarpr, Old High German scarpf, Old Irish cerb, Lettish skarbs]
 
'sharply
 
adv
 
'sharpness
 
n

Sharp (ʃɑːp)
 
n
Cecil (James). 1859--1924, British musician, best known for collecting, editing, and publishing English folk songs

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

sharp
O.E. scearp "cutting, keen, sharp," from P.Gmc. *skarpaz, lit. "cutting" (cf. O.S. scarp O.N. skarpr O.Fris. skerp Du. scherp Ger. scharf "sharp"), from PIE *(s)ker- "cut" (cf. Lett. skarbs "sharp," M.Ir. cerb "cutting;" see shear). The fig. meaning "acute or penetrating in
intellect or perception" is from O.E. The meaning "promptly" is first attested 1840. The musical meaning "half step above a given tone" is from 1576. Phrase sharp as a tack first recorded 1912 (sharp as a needle has been around since O.E.).

sharp
"a cheat at games," 1797, short for sharper (1681), probably a variant of sharker (see shark). Meaning "expert, connoisseur" is attested friom 1840, and likely is from sharp (adj.).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
SHARP
Skinheads Against Racial Prejudice
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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