C / compunctĭo
noun

compunctĭo

gen. compunctōnis · gender feminine · decl. 3rd
a puncture
Lit., a puncture: ligni, Ambros. in Psa. 118, Serm. 3, § 8.—
the sting of conscience, remorse figuratively
Trop., the sting of conscience, remorse (eccl. Lat.), Salv. adv. Avar. 4, 8 al.