/ Dictionary / Index M migratory locust: Meaning and Definition of Find definitions for: mi'gratory lo'cust Pronunciation: [key] any of several locusts that migrate in great swarms, esp. Locusta migratoria, of Africa and Asia. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. migratory miguelet Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language