Breadcrumb Home > Dictionary > Index C crown rust: Meaning and Definition of Find definitions for: crown' rust" Pronunciation: [key] — Plant Pathol. Plant Pathol. a disease of oats and other grasses, characterized by the formation, on the leaves, of orange or black spores, caused by a rust fungus, Puccinia coronata. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crown rot crown saw TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: parallax Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language