The Collaborative International Dictionary of English v.0.48:

Beefwood \Beef"wood`\, n.
   An Australian tree (Casuarina), and its red wood, used for
   cabinetwork; also, the trees Stenocarpus salignus of New
   South Wales, and Banksia compar of Queensland.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Stenocarpus salignus
    n 1: tree or tall shrub with shiny leaves and umbels of fragrant
         creamy-white flowers; yields hard heavy reddish wood [syn:
         scrub beefwood, beefwood, Stenocarpus salignus]