Breadcrumb Home > Dictionary > Index R Rocky Mountain locust: Meaning and Definition of Find definitions for: Rock'y Moun'tain lo'cust Pronunciation: [key] a migratory locust, Melanoplus spretus, that occurs in North America, esp. the Great Plains, where swarms cause great damage to crops and other vegetation. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rocky Mountain juniper Rocky Mountain National Park TrendingHere are the facts and trivia that people are buzzing about. Did Birds Evolve from Dinosaurs? The Twelve Dancing Princesses Current Events This Week: January 2023 African Americans by the Numbers Andersen's Fairy Tales: Contents The Celtic Twilight: A Teller of Tales ✖ Related Content Daily Word Quiz: saturnine Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language