There are 2 definitions of shark in English:

shark1

Line breaks: shark
Pronunciation: /ʃɑːk
 
/

noun

1A long-bodied chiefly marine fish with a cartilaginous skeleton, a prominent dorsal fin, and tooth-like scales. Most sharks are predatory, though the largest kinds feed on plankton, and some can grow to a large size.
  • Several orders (or superorders) of the subclass Elasmobranchii: many families
More example sentences
  • This shark feeds primarily on bony fishes such as parrot, trigger, squirrel, surgeon, damsel and goat fishes as well as eels.
  • Great white sharks can grow as long as 5 meters and weigh 2,500 kilos.
  • The male sharks enter the cove with considerably more speed, driven by their single-minded drive to mate.
2A small SE Asian freshwater fish with a shark-like tail, popular in aquaria.
  • Two species in the family Cyprinidae: the small red-tailed black shark (Labeo bicolor), and the larger black shark (Morulius chrysophekadion)
3A light greyish-brown European moth, the male of which has pale silvery hindwings.
  • Genus Cucullia, family Noctuidae: several species

verb

[no object] British informal Back to top  
(Typically of a man at a social gathering) be in active pursuit of a sexual partner: as soon as he arrived he was sharking among the women

Origin

late Middle English: of unknown origin.

Definition of shark in:

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Word of the day ween
Pronunciation: wiːn
verb
be of the opinion; think or suppose

There are 2 definitions of shark in English:

shark2

Line breaks: shark
Pronunciation: /ʃɑːk
 
/

noun

informal
1A person who unscrupulously exploits or swindles others: property sharks want to develop 200 acres around the site
More example sentences
  • They are the cyber-era equivalents of highwaymen, sharks, cheesy protection racketeers.
  • It is a scentless, unappealing botanical fraud sold by sharks to suckers.
  • But while property sharks may be kicking up their heels, small-time Plateau landowners and their tenants are bearing the brunt.
2US An expert in a specified field: a pool shark
More example sentences
  • A few unsavory types hung at the far end of the long dark bar, and a couple of sharks were playing pool in the side room.
  • Karaoke in a place like this fits right in next to the dudes watching the game on the tube and the pool sharks getting busy upstairs.
  • Preston, a pool shark, once beat singer Willie Nelson for $300,000 in dominoes.

Origin

late 16th century: perhaps from German Schurke 'worthless rogue', influenced by shark1.

Definition of shark in: