From Longman Dictionary of Contemporary Englishbubble bathˈbubble bath noun 1 [uncountable]DCB a liquid soap that smells pleasant and makes bubbles in your bath water2 [countable]DCB a bath with this in the water
Examples from the Corpus
bubble bath• Eating chocolates in a bubble bath.• I would lie for hours in my sea grey with the remains of bubble bath.• One reveller was already pouring bubble bath into a huge hot tub so he and his partner could frolic in the suds.• From shampoo and powder to bubble bath and lotion. 