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Webster 1913 Edition

(nẽrv′ū̍r)

Noun.

[F. See

(Bot.)

One of the nerves of leaves.

(Zool.)

One of the chitinous supports, or veins, in the wings of insects.

nervure ‎(plural nervures)

(entomology) A vein in the wing of an insect.
(botany, now rare) Any of the veins that form the branching framework of conducting and supporting tissues in a leaf or other plant organ.

From nerf +‎ -ure.

nervure f ‎(plural nervures)