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From The Collaborative International Dictionary of English v.0.48 [gcide]:
Shark \Shark\ (sh[aum]rk), noun [Of uncertain origin; perhaps through OF. fr. carcharus a kind of dogfish, Gr. karchari'as, so called from its sharp teeth, fr. ka'rcharos having sharp or jagged teeth; or perhaps named from its rapacity (cf. {Shark}, verb (used with an object) & i.); cf. Corn. scarceas.]
1. (Zool.) Any one of numerous species of elasmobranch fishes of the order {Plagiostomi}, found in all seas.
Note: Some sharks, as the basking shark and the whale shark, grow to an enormous size, the former becoming forty feet or more, and the latter sixty feet or more, in length. Most of them are harmless to man, but some are exceedingly voracious. The man-eating sharks mostly belong to the genera {Carcharhinus}, {Carcharodon}, and related genera. They have several rows of large sharp teeth with serrated edges, as the great white shark ({Carcharodon carcharias} or {Carcharodon Rondeleti}) of tropical seas, and the great blue shark ({Carcharhinus glaucus} syn. {Prionace glauca}) of all tropical and temperate seas. The former sometimes becomes thirty-six feet long, and is the most voracious and dangerous species known. The rare man-eating shark of the United States coast ({Carcharodon Atwoodi}) is thought by some to be a variety, or the young, of {Carcharodon carcharias}. The dusky shark ({Carcharhinus obscurus}) is a common species on the coast of the United States of moderate size and not dangerous. It feeds on shellfish and bottom fishes.
Note: The original 1913 Webster also mentioned a "smaller blue shark ({C. caudatus})", but this species could not be found mentioned on the Web (August 2002). The following is a list of Atlantic Ocean sharks: * * * * * * * * * * * * * * * * Common and Scientific Names of Atlantic Sharks * * * * * * * * * * * * * * * * from "Our Living Oceans 1995" (published by the National Printing Office): NMFS. 1999. Our Living Oceans. Report on the status of U.S. living marine resources, 1999. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-F/SPO-41, on-line version, http://spo.nwr.noaa.gov/olo99.htm. (the following list is found at at http://spo.nwr.noaa.gov/app5.pdf) (1) Pelagic Sharks Thresher shark ({Alopias vulpinus}) Bigeye thresher ({Alopias superciliosus}) Oceanic whitetip shark ({Carcharhinus longimanus}) Sevengill shark ({Heptrachias perlo}) Sixgill shark ({Hexanchus griseus}) Bigeye sixgill shark ({Hexanchus vitulus}) Shortfin mako ({Isurus oxyrinchus}) Longfin mako ({Isurus paucus}) Porbeagle ({Lamna nasus}) Blue shark ({Prionace glauca}) (2)Large Coastal Sharks Sandbar shark ({Carcharhinus plumbeus}) Reef shark ({Carcharhinus perezi}) Blacktip shark ({Carcharhinus limbatus}) Dusky shark ({Carcharhinus obscurus}) Spinner shark ({Carcharhinus brevipinna}) Silky shark ({Carcharhinus falciformis}) Bull shark ({Carcharhinus leucas}) Bignose shark ({Carcharhinus altimus}) Galapagos shark ({Carcharhinus galapagensis}) Night shark ({Carcharhinus signatus}) White shark ({Carcharodon carcharias}) Basking shark ({Cetorhinus maximus}) Tiger shark ({Galeocerdo cuvier}) Nurse shark ({Ginglymostoma cirratum}) Lemon shark ({Negaprion brevirostris}) Ragged-tooth shark ({Odontaspis ferox}) Whale shark ({Rhincodon typus}) Scalloped hammerhead ({Sphyrna lewini}) Great hammerhead ({Sphyrna mokarran}) Smooth hammerhead ({Sphyrna zygaena}) (3) Small Coastal Sharks Finetooth shark ({Carcharhinus isodon}) Blacknose shark ({Carcharhinus acronotus}) Atlantic sharpnose shark ({Rhizoprionodon erraenovae}) Caribbean sharpnose shark ({Rhizoprionodon porosus}) Bonnethead ({Sphyrna tiburo}) Atlantic angel shark ({Squatina dumeril}) [PJC]
2. A rapacious, artful person; a sharper. [Colloq.]
3. Trickery; fraud; petty rapine; as, to live upon the shark. [Obs.] --South.
{Basking shark}, {Liver shark}, {Nurse shark}, {Oil shark}, {Sand shark}, {Tiger shark}, etc. See under {Basking}, {Liver}, etc. See also {Dogfish}, {Houndfish}, {Notidanian}, and {Tope}.
{Hammer-headed shark}. See {Hammerhead}.
{Port Jackson shark}. See {Cestraciont}.
{Shark barrow}, the eggcase of a shark; a sea purse.
{Shark ray}. Same as {Angel fish} (a), under {Angel}.
{Thrasher shark} or {Thresher shark}, a large, voracious shark. See {Thrasher}.
{Whale shark}, a huge harmless shark ({Rhinodon typicus}) of the Indian Ocean. It becomes sixty feet or more in length, but has very small teeth.
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Shark \Shark\, verb (used with an object) [Of uncertain origin; perhaps fr. shark, n., or perhaps related to E. shear (as hearken to hear), and originally meaning, to clip off. Cf. {Shirk}.] To pick or gather indiscriminately or covertly. [Obs.] --Shak.
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Shark \Shark\, verb (used without an object) [imp. & p. p. {Sharked}; p. pr. & vb. n. {Sharking}.]
1. To play the petty thief; to practice fraud or trickery; to swindle.
Neither sharks for a cup or a reckoning. --Bp. Earle.
2. To live by shifts and stratagems. --Beau. & Fl.
From WordNet (r) 3.0 (2006) [wn]:
noun
1: any of numerous elongate mostly marine carnivorous fishes with heterocercal caudal fins and tough skin covered with small toothlike scales
2: a person who is ruthless and greedy and dishonest
3: a person who is unusually skilled in certain ways; "a card shark"
verb
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Definitions retrieved from the Open Source DICT English and WordNet 3.0 dictionaries. Click here for database copyright information.
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