noun, plural cal·lus·es.
- a hardened or thickened part of the skin; a callosity.
- a new growth of osseous matter at the ends of a fractured bone, serving to unite them.
- the tissue that forms over the wounds of plants, protecting the inner tissues and causing healing.
- a deposit on the perforated area of a sieve tube.
- (in grasses) a tough swelling at the base of a lemma or palea.
verb (used without object), cal·lused, cal·lus·ing.
verb (used with object), cal·lused, cal·lus·ing.
THINK YOU’VE GOT A HANDLE ON THIS US STATE NICKNAME QUIZ?
Origin of callus
OTHER WORDS FROM callusun·cal·lused, adjective
WORDS THAT MAY BE CONFUSED WITH calluscallous, callus
Example sentences from the Web for callus
Calluses [that were] painful when he danced … and a bad fungus that was all over his feet and into his flesh.
As I lay there, eyes closed, half awake, I rubbed my elbows with my palms and found that I was rubbing prodigious calluses.The Jacket (The Star-Rover)|Jack London
He rubbed his chin again, his hard calluses grating over his whiskers.Down and Out in the Magic Kingdom|Cory Doctorow
But then he took her hand and felt its fine warmth, the calluses he remembered from all those months ago, and he felt better.Makers|Cory Doctorow
The lower end calluses or heals, and the roots form more readily when the cutting is planted in the spring.Cornell Nature-Study Leaflets|Various
My sister-in-law will not let a man without calluses sit down at the table.
British Dictionary definitions for callus
noun plural -luses
- a mass of hard protective tissue produced in woody plants at the site of an injury
- an accumulation of callose in the sieve tubes