/ Dictionary / Index M mason wasp: Meaning and Definition of Find definitions for: ma'son wasp" Pronunciation: [key] any of several solitary wasps, as Rygchium dorsale, that construct nests of mud or clay. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. masonry Masorah Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language