C / callisco
verb hapax

callisco

2nd PP calliscĕre · conj. 3rd
to become dull; insensible
v. inch. [calleo], to become dull, insensible: aures nobis calliscerunt ad injurias, Cato ap. Non. p. 89, 27 sq. (Meyer, calliscunt, Or. Rom. Fragm. p. 118).