/ Dictionary / Index M mother yaw: Meaning and Definition of Find definitions for: moth'er yaw" Pronunciation: [key] the initial lesion of yaws, occurring at the site of inoculation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. motherwort moth mullein Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language