Yes, WOODWAXENS is a Scrabble word!

Letter values in Scrabble US: W 4, O 1, O 1, D 2, W 4, A 1, X 8, E 1, N 1, S 1.

Is it a valid word?

WOODWAXENS is a valid word in the official Scrabble dictionary (US) and the UK Scrabble Dictionary, but not in Words with Friends (ENABLE).

small Eurasian shrub having clusters of yellow flowers that yield a dye; common as a weed in Britain and the United States; sometimes grown as an ornamental

Also: dyer's greenweed, dyer's-broom, genista tinctoria.

Not playable in Scrabble US: GREENWEED.