A nick-name for someone that is a relentless predator, like a shark, when it comes to the opposite sex.

i.e. Dave "The Shark"
Luke: We've only just walked in the door and he's off weaving through the crowd looking for ass

Paul: Yeah, that's why we call him The Shark.
by chopper69 November 12, 2009
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The Shark is the nickname for Washington Nationals outfielder Roger Bernadina. He relentlessly patrols the outfield and attacks every fly ball in his direction. After making a spectacular play or hitting a home run, he puts his hand on top of his head, representing the dorsal fin.
Fan 1: Did you see The Shark last night?
Fan 2: 2 for 5 with a game tying home run in the ninth! Yeah, Roger is the man!
Fan 1: Yeah, he will easily win MVP this year.
Fan 2: Most Vicious Predator!
by Sharkadina August 27, 2010
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POV: You are here from the definition of Urban Dictionary and decided to see what shark meant even though you already know what it means, and just want to see some random sexual definition.

Anyways, a shark is a sea creature.
Jimmy: *looks for the definition of Urban Dictionary on Urban Dictionary*
Also Jimmy: *sees the definition that contains the word shark*

Jimmy again: *looks for shark*
Shaniqua: ay lil timmy you ain gonna look up da definishin of shawrk becu you saw tha shi on th definitshin of urb dic right lil squart?
by DrizzyXL September 30, 2020
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When you got so curious about that Urban dictionary definition (not mine), you decided to look up "shark" thinking you would find the definition "Apparently a way to have sex", although you very well know what a shark is (a sea animal that eats blood). Well, NO!
Did you look up "shark" on Urban Dictionary just to find a sexual definition?
by URB4N D1C710N4RY April 1, 2021
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an aquatic animal that lives under the ocean sea. watch out for land sharks and sharknados which can happen on land tho. most sharks are under water tho. they eat meat
by colininthehouse October 9, 2018
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A shark is a very beautiful creature that is misunderstood. The shark is very interesting and different from humans. The shark has gills, cartilage, and a sixth sense. These creatures can accidentally mistake humans for the food they eat on a regular basis. This includes seals occasionally, large fish, and very rarely other small sharks. These amazing animals must be recognized and saved.
If you have a different belief in sharks your whole life will change :)
by Sharklover1995 September 28, 2020
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