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WordNet-Online
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Noun shark has 3 senses
- shark - any of numerous elongate mostly marine carnivorous fishes with heterocercal caudal fins and tough skin covered with small toothlike scales
--1 is a kind of elasmobranch, selachian
--1 has particulars: | | cow shark, six-gilled shark, Hexanchus griseus; mackerel shark; thresher, thrasher, thresher shark, fox shark, Alopius vulpinus; carpet shark, Orectolobus barbatus; nurse shark, Ginglymostoma cirratum; sand tiger, sand shark, Carcharias taurus, Odontaspis taurus; whale shark, Rhincodon typus; cat shark; requiem shark; dogfish; hammerhead, hammerhead shark; angel shark, angelfish, Squatina squatina, monkfish |
- shark - a person who is ruthless and greedy and dishonest
--2 is a kind of wrongdoer, offender
--2 has particulars: usurer, loan shark, moneylender, shylock
- shark - a person who is unusually skilled in certain ways; "a card shark"
--3 is a kind of expert
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