Breadcrumb Home > Dictionary > Index B black rust: Meaning and Definition of Find definitions for: black' rust' Pronunciation: [key] — Plant Pathol. Plant Pathol. any of several diseases of plants caused by rusts and characterized by black discoloration resulting from the fungal teliospores. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Black Russian black sage 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: supertonic Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language