/ Dictionary / Index M Maasai: Meaning and Definition of Find definitions for: Maa•sai Pronunciation: (mä-sī', mä'sī), [key] — pl. -sais, -sai. Masai. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Maas Maastricht Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language