Yes, NERVURE is a Scrabble word!

Letter values in Scrabble US: N 1, E 1, R 1, V 4, U 1, R 1, E 1.

Is it a valid word?

NERVURE is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ
one of the horny ribs that stiffen and support the wing of an insect