Definition of sacrament

• n. - The oath of allegiance taken by Roman soldiers; hence, a sacred ceremony used to impress an obligation; a solemn oath-taking; an oath.
• n. - The pledge or token of an oath or solemn covenant; a sacred thing; a mystery.
• n. - One of the solemn religious ordinances enjoined by Christ, the head of the Christian church, to be observed by his followers; hence, specifically, the eucharist; the Lord's Supper.
• v. t. - To bind by an oath.