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sha r|ing eco no|my N‑SING The sharing economy is a system in which people offer the use of their skills or things they own, using the internet. □  The sharing economy allows people to make money from their possessions by renting them out when they aren't using them.

shark /ʃɑː ^r k/ (sharks ) The form shark can also be used as the plural form for meaning 1 . 1 N‑VAR A shark is a very large fish. Some sharks have very sharp teeth and may attack people.

2 N‑COUNT If you refer to a person as a shark , you disapprove of them because they trick people out of their money by giving bad advice about buying, selling, or investments. [INFORMAL , DISAPPROVAL ] □  Beware the sharks when you are making up your mind how to invest.

3 → see also loan shark

sharp ◆◆◇ /ʃɑː ^r p/ (sharps , sharper , sharpest )

1 ADJ A sharp point or edge is very thin and can cut through things very easily. A sharp knife, tool, or other object has a point or edge of this kind. □  The other end of the twig is sharpened into a sharp point to use as a toothpick. □  Using a sharp knife, cut away the pith and peel from both fruits.

2 ADJ You can describe a shape or an object as sharp if part of it or one end of it comes to a point or forms an angle. □  His nose was thin and sharp.

3 ADJ A sharp bend or turn is one that changes direction suddenly. □  I was approaching a fairly sharp bend that swept downhill to the left. ● ADV [ADV adv] Sharp is also an adverb. □  Do not cross the bridge but turn sharp left to go down on to the towpath. ●  sharp|ly ADV [ADV after v] □  Room number nine was at the far end of the corridor where it turned sharply to the right.

4 ADJ If you describe someone as sharp , you are praising them because they are quick to notice, hear, understand, or react to things. [APPROVAL ] □  He is very sharp, a quick thinker and swift with repartee.

5 ADJ If someone says something in a sharp way, they say it suddenly and rather firmly or angrily, for example because they are warning or criticizing you. □  That ruling had drawn sharp criticism from civil rights groups. ●  sharp|ly ADV [ADV with v, ADV adj] □  'You've known,' she said sharply, 'and you didn't tell me?'

6 ADJ A sharp change, movement, or feeling occurs suddenly, and is great in amount, force, or degree. □  There's been a sharp rise in the rate of inflation. □  He felt a sharp pain in the abductor muscle in his right thigh. ●  sharp|ly ADV [ADV with v, ADV adj] □  Unemployment among the over-forties has risen sharply in recent years.

7 ADJ [usu ADJ n] A sharp difference, image, or sound is very easy to see, hear, or distinguish. □  Many people make a sharp distinction between humans and other animals. □  We heard a voice sing out in a clear, sharp tone. ●  sharp|ly ADV [usu ADV with v, oft ADV adj] □  Opinions on this are sharply divided.

8 ADJ A sharp taste or smell is rather strong or bitter, but is often also clear and fresh. □  …a colourless, almost odourless liquid with a sharp, sweetish taste.

9 ADV [n ADV ] Sharp is used after stating a particular time to show that something happens at exactly the time stated. □  She planned to unlock the store at 8.00 sharp this morning.

10 N‑COUNT [usu n N ] Sharp is used after a letter representing a musical note to show that the note should be played or sung half a tone higher. Sharp is often represented by the symbol ♯. □  A solitary viola plucks a lonely, soft F sharp.

11 → see also razor-sharp

sharp|en /ʃɑː ^r pən/ (sharpens , sharpening , sharpened )