Definitions
1.nounA sacred act or ceremony in Christianity. In Catholic theology, a sacrament is defined as "an outward sign instituted by Christ to give grace."
2.noun(in particular) The Eucharist.
3.nounThe consecrated Eucharist (especially the bread).
4.nounA thing which is regarded as possessing a sacred character or mysterious significance.
5.nounThe oath of allegiance taken by soldiers in Ancient Rome; hence, any sacred ceremony used to impress an obligation; a solemn oath-taking; an oath.
6.verbTo bind by an oath.