1

crab

play
noun, often attributive \ ˈkrab \

Definition of crab

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 capitalized :cancer 1
3 crabs plural :infestation with crab lice
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

Other Invertebrates (Except Insects) Terms


2

crab

verb

Definition of crab

crabbed; crabbing
intransitive verb
1 :to fish for crabs
2 a (1) :to move sideways indirectly or diagonally
(2) :to crab an airplane
b :to scuttle or scurry sideways
transitive verb
1 :to cause to move sideways or in an indirect or diagonal manner; specifically :to head (an airplane) into a crosswind to counteract drift
2 :to subject to crabbing

crabber

noun

First Known Use of crab

1657


3

crab

noun

Definition of crab

Origin and Etymology of crab

Middle English crabbe, perhaps from crabbe 1crab


4

crab

noun

Definition of crab

:an ill-tempered person :grouch

First Known Use of crab

1580


5

crab

verb

Definition of crab

crabbed; crabbing
transitive verb
1 :to make sullen :sour
  • old age has crabbed his nature
2 :to complain about peevishly
3 :spoil, ruin
intransitive verb
:carp, grouse
  • always crabs about the weather

crabber

noun

Origin and Etymology of crab

Middle English crabben, probably back-formation from crabbed


CRAB Defined for Kids

1

crab

play
noun \ ˈkrab \

Definition of crab for Students

: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

noun

Definition of crab for Students

:a person who is usually grouchy

3

crab

verb

Definition of crab for Students

crabbed; crabbing

Medical Dictionary

crab

play
noun \ ˈkrab \

medical Definition of crab

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 crabs plural :infestation with pubic lice


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