/ Dictionary / Index M mountain rosebay: Meaning and Definition of Find definitions for: moun'tain rose'bay Pronunciation: [key] a showy, evergreen shrub, Rhododendron catawbiense, of the heath family, found in the mountainous regions from Virginia to Georgia, having bell-shaped, rose or purple flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mountain range mountain sandwort Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language