1

crab

play
noun, often attributive \ˈkrab\

Definition of crab

  1. 1 plural crabs also crab :  any of numerous chiefly marine broadly built decapod crustaceans: a :  any of an infraorder (Brachyura) with a short broad usually flattened carapace, a small abdomen that curls forward beneath the body, short antennae, and the anterior pair of limbs modified as grasping pincers b :  any of various crustaceans of an infraorder (Anomura) resembling true crabs in the more or less reduced condition of the abdomen

  2. 2 capitalized :  cancer 1

  3. 3 plural :  infestation with crab lice

  4. 4 :  the angular difference between an aircraft's course and the heading necessary to make that course in the presence of a crosswind

Origin and Etymology of crab

Middle English crabbe, from Old English crabba; akin to Old High German krebiz crab and perhaps to Old English ceorfan to carve — more at carve


First Known Use: before 12th century

Other Invertebrates (Except Insects) Terms


2

crab

verb

Definition of crab

crabbed

crabbing

  1. intransitive verb
  2. 1 :  to fish for crabs

  3. 2 a (1) :  to move sideways indirectly or diagonally (2) :  to crab an airplane b :  to scuttle or scurry sideways

  4. transitive verb
  5. 1 :  to cause to move sideways or in an indirect or diagonal manner; specifically :  to head (an airplane) into a crosswind to counteract drift

  6. 2 :  to subject to crabbing

crabber

noun

1657

First Known Use of crab

1657


3

crab

noun

Definition of crab

Origin and Etymology of crab

Middle English crabbe, perhaps from crabbe 1crab


First Known Use: 14th century


4

crab

noun

Definition of crab

  1. :  an ill-tempered person :  grouch

1580

First Known Use of crab

1580


5

crab

verb

Definition of crab

crabbed

crabbing

  1. transitive verb
  2. 1 :  to make sullen :  sour <old age has crabbed his nature>

  3. 2 :  to complain about peevishly

  4. 3 :  spoil, ruin

  5. intransitive verb
  6. :  carp, grouse <always crabs about the weather>

crabber

noun

Origin and Etymology of crab

Middle English crabben, probably back-formation from crabbed


First Known Use: 1662


CRAB Defined for Kids

1

crab

play
noun \ˈkrab\

Definition of crab for Students

  1. :  a sea animal that is a crustacean related to the lobsters and has a short broad flat shell and a front pair of legs with small claws


2

crab

play
noun

Definition of crab for Students

  1. :  a person who is usually grouchy


3

crab

play
verb

Definition of crab for Students

crabbed

crabbing


Medical Dictionary

crab

play
noun \ˈkrab\

Medical Definition of crab

  1. 1:  any of a tribe (Brachyura) of chiefly marine crustaceans with a short broad usually flattened carapace, a small abdomen that curls forward beneath the body, short antennae, and the anterior pair of limbs modified as grasping pincers

  2. 2crabs plural :  infestation with pubic lice



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