(of a person) Having a lot of hair on the body. / (of an animal) Having a lot of fur. / (of a body part other than the head) Having hair growing from it.

The characteristic of being hairy. / (technical) A characteristic of yarn: the proportion of fibre ends that stick out and are not embedded in the yarn body.

plural of hairiness

The species of Chaetophractus (family Chlamyphoridae) / hairy long-nosed armadillo (Dasypus pilosus) (family Dasypodidae), endemic to Peru

plural of hairy canary

(vulgar, slang) The penis. / (UK, slang) A temper tantrum.

A species of frog, Trichobatrachus robustus, found in Central Africa, that has dermal papillae on the skin

plural of hairy cell

A kind of malignant B cell in an uncommon form of leukemia of unknown cause, having a "hairy" appearance under the microscope.

(informal) The Devil.