noun, Plant Pathology.
a symptom or phase of certain especially fungal diseases of plants, characterized by necrotic discoloration of the leaves.
any disease so characterized.
- Leaf blower
noun an engine-driven device used to propel fallen leaves and other debris for removal Examples Does any lawn-care implement inspire more controversy and vitriol than the leaf blower? Word Origin late 1950s
noun 1. See under 1 (def 1a). [buhd] /bʌd/ noun 1. Botany. 2. Zoology. (in certain animals of low organization) a prominence that develops into a new individual, sometimes permanently attached to the parent and sometimes becoming detached; gemma. 3. Mycology. a small, rounded outgrowth produced from a fungus spore or cell by a process […]
noun 1. any of various butterflies of the genus Kallima, of southern Asia, the East Indies, and Australia, having wings that resemble dead leaves.
noun 1. a plant that climbs by using leaves specialized as tendrils