1. A person who does not want another person to succeed by showing the following actions: Disloyalty, Jealousy, Slander, Two-faced behavior.

2. A person who uses another for personal gain or self gratification.

Synonyms: Hater, Back Stabber Leach Free-Loader
1. "Just like crabs in a bucket, won't nobody let nobody up"

2.I told you that "Crab" was not going to come to your show.

3. I loaned her some money and I know she received her bonus, and that "Crab" has not even mentioned my money
by 1Real813Beauty October 15, 2010
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A beautiful creature that can hold a knife, pinch people, and my only friend is a crab because it doesnt argue with me. You also just feed it and water it and forget about it for a few days and repeat the process.
Random guy: i just stole that crabs food
Crab: stabs random guy
by The slavic crab March 22, 2019
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Three accepted meanings:

1 A unit of brightness of nebulae. A nebula is a cloud-like object visible in the night sky, using a telescope or binoculars; think milky squished star. It - a Crab - is, by definition, equal to the brightness of the Crab Nebula, which was seen as a supernova in 1054 A.D., by Chinese and Arab astronomers; also known as the nebula M1 (Messier1).
A Crab has a sub-division millicrab, which any half-competent student of the metric system will be able to tell you is a thousandth-part of a Crab.

2 A hard-shelled crustacean, with a body generally wider than it is long, two pincers, and a wide variation in size, ranging from pea-crabs, about the size of the eponymous vegetable - to spider crabs, which have a claw span of three or four metres/yards in large (= old) specimens.

3 Pubic lice. This indicates that you may not have been too careful aboutyour fuck-buddies.
1 The new nebula is about five hundred and twenty millicrabs - say half the brightness of the Crab Nebula - said the little blonde astronomer; plainly, she didn't seek to sensationalise this new discovery.

2 Crabs can be caught in many coastal waters - but be careful picking them up, as they can nip.

3 'That damned soccer-jock gave me crabs - he must have shagged Brutus last week!' said Pandora with resignation, whilst counting her plentiful takings.
by railtracksurvivor May 1, 2009
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a pubic louse(usually plural)
That girl had crabs. Why would you even think about having sex with her?
by Light Joker October 13, 2004
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A mother who nags non-stop about everything.
i.e. Emilce De Girolami
by Crab's daughter June 19, 2010
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Crabius Hater-aid-ius

A species best know for the ability to pull town another when they see poisitive actions going on without them. The Crab is in of itself a credible individual capable of doing great things ,but through the use of an over inflated ego causes division.
The Crabius Hater-aid-ius
by G from the A February 24, 2008
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