ablution

(chemistry) Originally, the purifying of oils and other substances by emulsification with hot water; now more generally, a thorough cleansing of a precipitate or other non-dissolved substance.

The act of washing or cleansing the body, or some part of it, as a religious rite.

(literary or humorous, usually in the plural) Washing oneself; bathing, cleaning oneself up.

(Western Christianity) The rinsing of the priest's hand and the sacred vessel following the Communion with, depending on rite, water or a mix of it and wine, which may then be drunk by the priest.

The liquid used in the cleansing or ablution.

(Eastern Orthodoxy) The ritual consumption by the deacon or priest of leftover sacred wine of host after the Communion.

(plural only, UK, military) The location or building where the showers and basins are located.