'Wheat rust' definitions:

Definition of 'wheat rust'

(from WordNet)
noun
Rust fungus that attacks wheat [syn: wheat rust, Puccinia graminis]

Definition of 'Wheat rust'

From: GCIDE
  • Wheat rust \Wheat rust\ A disease of wheat and other grasses caused by the rust fungus Puccinia graminis; also, the fungus itself. [Webster 1913 Suppl.]