(1):

(n.) Repentance.

(2):

(n.) A means of repairing a sin committed, and obtaining pardon for it, consisting partly in the performance of expiatory rites, partly in voluntary submission to a punishment corresponding to the transgression. Penance is the fourth of seven sacraments in the Roman Catholic Church.

(3):

(n.) Pain; sorrow; suffering.

(4):

(v. t.) To impose penance; to punish.