The Collaborative International Dictionary of English v.0.48:

Shagbark \Shag"bark`\, n. (Bot.)
   A rough-barked species of hickory (Carya alba), its nut.
   Called also shellbark. See Hickory.
   (b) The West Indian Pithecolobium micradenium, a legiminous
       tree with a red coiled-up pod.
       [1913 Webster]