noun, Plant Pathology.
a bacterial disease of sugarcane, characterized by irregular, bleached streaks on the leaves and defoliation and caused especially by Bacterium albilineans.
noun, Botany. 1. the mark left on a stem or twig after a leaf falls. leaf scar The mark left on a stem after a leaf falls. Leaf scars can be used to identify tree species in winter or from specimens of their twigs.
- Leaf sheath
noun 1. (botany) the basal part of a grass leaf that encircles the stem
- Leaf sight
noun 1. a folding rear sight on certain rifles
- Leaf site
A machine that merely originates and reads Usenet news or mail, and does not relay any third-party traffic. Often uttered in a critical tone; when the ratio of leaf sites to backbone, rib, and other relay sites gets too high, the network tends to develop bottlenecks. Compare backbone site, rib site. [Jargon File]