Breadcrumb Home > Dictionary > Index B bathtub: Meaning and Definition of Find definitions for: bath•tub Pronunciation: (bath'tub", bäth'-), [key] — n. a tub to bathe in, esp. one that is a permanent fixture in a bathroom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bathtub (Thesaurus) bath towel bathtub gin ✖ Related Content Daily Word Quiz: evanescent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language