/ Dictionary / Index B breast beam: Meaning and Definition of Find definitions for: breast' beam" Pronunciation: [key] a horizontal bar, located at the front of a loom, over which the woven material is passed on its way to the cloth roll. breastsummer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. breast breast-beating Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language