Meaning

noun any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ

noun one of the horny ribs that stiffen and support the wing of an insect

originEtymology tree Latin nervus Old French nerf Middle French nerf French nerf Proto-Indo-European *-tew-? Proto-Indo-European *-r-eh₂? Latin -(ā)tūram Old French -(ë)ure French -ure French nervurebor. English nervure Borrowed from French nervure.

Etymology from Wiktionary, CC BY-SA 3.0