plunge bath
 浴池


 Plunge, n.
 1. The act of thrusting into or submerging; a dive, leap, rush, or pitch into, or as into, water; as, to take the water with a plunge.
 2. Hence, a desperate hazard or act; a state of being submerged or overwhelmed with difficulties. [R.]
    She was brought to that plunge, to conceal her husband's murder or accuse her son.   --Sir P. Sidney.
 And with thou not reach out a friendly arm,
 To raise me from amidst this plunge of sorrows?   --Addison.
 3. The act of pitching or throwing one's self headlong or violently forward, like an unruly horse.
 4. Heavy and reckless betting in horse racing; hazardous speculation. [Cant]
 Plunge bath, an immersion by plunging; also, a large bath in which the bather can wholly immerse himself.
 Plunge battery, or plunging battery Elec., a voltaic battery so arranged that the plates can be plunged into, or withdrawn from, the exciting liquid at pleasure.

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