Syn.
— Obdurate; hard; hardened; indurated; insensible; unfeeling;
unsusceptible. See Obdurate.
— Cal"lous*ly, adv.
— Cal"lous*ness, n.
A callousness and numbness of soul. Bentley.

CALLOW
Cal"low, a. Etym: [OE. calewe, calu, bald, AS. calu; akin to D. kaal,
OHG. chalo, G. Kuhl; cf. L. calvus.]

1. Destitute of feathers; naked; unfledged. An in the leafy summit, spied a nest, Which, o'er the callow young, a sparrow pressed. Dryden.

2. Immature; boyish; "green"; as, a callow youth. I perceive by this, thou art but a callow maid. Old Play [1675].

CALLOW
Cal*low", n. (Zoöl.) Etym: [Named from its note.]

Defn: A kind of duck. See Old squaw.

CALLUS
Cal"lus, n. Etym: [L. See Callous.]

1. (Med.) (a) Same as Callosity. (b

Defn: 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.

2. (Hort.)