abluent
/ˈablʊənt/originally Medicine. Now rare
adjective
Having the property of cleansing the body.
noun
A medicine or other agent used to cleanse the body.
Origin
Early 18th century; earliest use found in Glossographia Anglicana Nova. From classical Latin abluent-, abluēns, present participle of abluere to wash off or away from ab- + luere to wash.