Yes, TWAYBLADE is a Scrabble word!

Letter values in Scrabble US: T 1, W 4, A 1, Y 4, B 3, L 1, A 1, D 2, E 1.

Is it a valid word?

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

orchid having a pair of ovate leaves and a long slender raceme of green flowers sometimes tinged red-brown; Europe to central Asia
an orchid of the genus Liparis having a pair of leaves

Also: listera ovata.