/ Dictionary / Index B bustline: Meaning and Definition of Find definitions for: bust•line Pronunciation: (bust'līn"), [key] — n. the outline or shape of a woman's bust. the part of a garment covering the breasts: a dress with a fitted bustline. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bustle pipe bus topology Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language