To form such hardened tissue.
A shining area on the frons of many species of Tabanomorpha (horse flies and relatives).
The material of repair in fractures of bone; a substance exuded at the site of fracture, which is at first soft or cartilaginous in consistency, but is ultimately converted into true bone and unites the fragments into a single piece.
The new formation over the end of a cutting, before it puts out rootlets.
A hardened area of the skin (especially on the foot or hand) caused by repeated friction, wear or use.
To suffer from strain or old age.
To make a prolonged sharp grating or squeaking sound, as by the friction of hard substances.
To produce a creaking sound with.
The sound produced by anything that creaks; a creaking.