The Collaborative International Dictionary of English v.0.48:

Porkwood \Pork"wood`\, n. (Bot.)
   The coarse-grained brownish yellow wood of a small tree
   (Pisonia obtusata) of Florida and the West Indies. Also
   called pigeon wood, beefwood, and corkwood.
   [1913 Webster]

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]

The Collaborative International Dictionary of English v.0.48:

Casuarina \Cas`u*a*ri"na\, n. [NL., supposed to be named from
   the resemblance of the twigs to the feathers of the
   cassowary, of the genus Casuarius.] (Bot.)
   A genus of leafless trees or shrubs, with drooping branchlets
   of a rushlike appearance, mostly natives of Australia. Some
   of them are large, producing hard and heavy timber of
   excellent quality, called beefwood from its color.
   [1913 Webster]

WordNet (r) 3.0 (2006):

beefwood
    n 1: a tropical hardwood tree yielding balata gum and heavy red
         timber [syn: balata, balata tree, beefwood, bully
         tree, Manilkara bidentata]
    2: any of several heavy hard reddish chiefly tropical woods of
       the families Casuarinaceae and Proteaceae; some used for
       cabinetwork
    3: any of several Australian trees of the genus Casuarina
       yielding heavy hard red wood used in cabinetwork
    4: 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]
    5: tree yielding hard heavy reddish wood [syn: beefwood,
       Grevillea striata]