Definitions

from The Century Dictionary.

  • noun In botany, a disease of plants commonly called rust (which see).

from the GNU version of the Collaborative International Dictionary of English.

  • noun A disease of plants caused by fungi, commonly called the rust, from its resemblance to iron rust in color.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A disease of plants caused by fungus; rust.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin, iron rust, from ferrum ("iron").

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Examples

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