'Callus' definitions:

Definition of 'callus'

From: WordNet
noun
An area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) [syn: callosity, callus]
noun
Bony tissue formed during the healing of a fractured bone
noun
(botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid
verb
Cause a callus to form on; "The long march had callused his feet"
verb
Form a callus or calluses; "His foot callused"

Definition of 'Callus'

From: GCIDE
  • Callus \Cal"lus\ (k[a^]l"l[u^]s), n. [L. See Callous.]
  • 1. (Med.) (a) Same as Callosity. (b) The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistence, but is ultimately converted into true bone and unites the fragments into a single piece. [1913 Webster]
  • 2. (Hort.) The new formation over the end of a cutting, before it puts out rootlets. [1913 Webster]

Synonyms of 'callus'

From: Moby Thesaurus