shark

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shark1 / shärk/ • n. 1. a long-bodied chiefly marine fish (subclass Elasmobranchii) with a cartilaginous skeleton, a prominent dorsal fin, and toothlike scales. Most sharks are predatory, although the largest kinds feed on plankton. 2. a small Southeast Asian freshwater fish of the minnow family with a sharklike tail, popular in aquariums. shark2 • n. inf. 1. a person who unscrupulously exploits or swindles others: Coleby was a shark, not the sort of man to pay more when he could pay less | property sharks want to develop 200 acres around the site. See also loan shark. 2. an expert in a specified field: a pool shark.

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sharkarc, ark, Bach, bark, barque, Braque, Clark, clerk, dark, embark, hark, impark, Iraq, Ladakh, Lamarck, lark, macaque, marc, mark, marque, narc, nark, Newark, park, quark, sark, shark, snark, spark, stark, Vlach •matriarch, patriarch •tanbark • ringbark • stringy-bark •Offenbach • ironbark • oligarch •salesclerk • titlark • skylark •meadowlark • woodlark • mudlark •landmark • checkmark • Denmark •benchmark • waymark • trademark •seamark • Bismarck • telemark •tidemark • Kitemark • pockmark •Ostmark • hallmark • Goldmark •Deutschmark • bookmark • footmark •earmark • watermark • birthmark •anarch • car park • skatepark •ballpark •Petrarch, tetrarch •hierarch, squirearch •exarch • Pesach • loan shark •Plutarch • aardvark

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shark Torpedo-shaped, cartilaginous fish found in subpolar to tropical marine waters. They have well-developed jaws, bony teeth, usually five gill slits on each side of the head, and a characteristic, lobe-shaped tail with a longer top lobe. Sharks are carnivorous, and at least ten species are known to attack humans. There are c.250 living species. Order Selachii. See also dogfish; hammerhead; whale shark; white shark

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shark a type for predatory behaviour; the image of the great white shark typifying particular ferocity was established in the public mind by the film Jaws (1975).
jump the shark (of a television series) reach a point when the inclusion of far-fetched events for the sake of novelty marks a decline. The origin is said to be an episode in the long-running US television series Happy Days, in which the central character (the Fonz) jumped over a shark when waterskiing.

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shark large voracious seafish XVI; rapacious or extortionate person XVIII. of unkn. orig.

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