Yes, BEEFWOODS is a Scrabble word!

Letter values in Scrabble US: B 3, E 1, E 1, F 4, W 4, O 1, O 1, D 2, S 1.

Is it a valid word?

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

a tropical hardwood tree yielding balata gum and heavy red timber
any of several heavy hard reddish chiefly tropical woods of the families Casuarinaceae and Proteaceae; some used for cabinetwork
any of several Australian trees of the genus Casuarina yielding heavy hard red wood used in cabinetwork
tree or tall shrub with shiny leaves and umbels of fragrant creamy-white flowers; yields hard heavy reddish wood
tree yielding hard heavy reddish wood

Also: balata tree, bully tree, manilkara bidentata, scrub beefwood, stenocarpus salignus, grevillea striata.