flagellation (n.) Look up flagellation at Dictionary.com
early 15c., "the scourging of Christ," from Old French flagellacion "scourging, flogging," or directly from Latin flagellationem (nominative flagellatio) "a scourging," noun of action from past participle stem of flagellare "to scourge, lash" (see flagellum). In a general sense from 1520s.