noun
Refers to ritual or spiritual purification, often in Shinto contexts, but can also be used more generally for cleansing something of impurities.
神社でお清めの塩をいただいた。
I received purification salt at the shrine.
心の清めのために滝に打たれる修行がある。
There is a practice of standing under a waterfall for spiritual purification.
清め is the noun form of the verb 清める (to purify). 清め refers to the act or state of purification, while 清める is the action itself.
Derived from the verb 清める (きよめる, to purify), which itself comes from the adjective 清い (きよい, pure).