ablution
n.
"ritual washing," late 14c., from Latin ablutionem (nominative ablutio), noun of action from past participle stem of abluere "to wash off," from ab- "off" (see ab-) + luere "wash," related to lavere (see lave).
〔李〕[ab-;-lut;-ionn.] n.沐浴； 洗礼； 洗礼水 ←lav,lut (L lavare,lutum)=to wash 洗