Definitions for "Mikveh"
a ritual bath used by women for purification after emerging from the state of niddah, and used by both men and women in their endeavors to attain spiritual self-refinement
(a gathering, accumulation [of water]) pool of water for immersing the body to purify it from ritual uncleanness. The mikveh is similarly used to purify vessels (Numbers 31:22-23). Immersion in a mikveh is also obligatory for proselytes, as part of their ceremony of conversion.
(Hebrew, "collection," especially of water) — Bath in which Orthodox Jews immerse themselves for ritual purification, as before the Sabbath or following menstruation.