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hot tub

a wooden tub, usually large enough to accommodate several persons, that is filled with hot aerated water and often equipped with a thermostat and whirlpool: used for recreation or physical therapy and often placed out of doors, as on a porch.
Origin of hot tub
1970-75, Americanism
Related forms
hot-tubber, noun
hot-tubbing, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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