Source : Webster's Revised Unabridged Dictionary (1913)

Scaphoid \Scaph"oid\ (?; 277), a. [Gr. ska`fh a boat + -oid: cf.
   F. scapho["i]de.] (Anat.)
   Resembling a boat in form; boat-shaped. -- n. The scaphoid
   bone.

   {Scaphoid bone}
   (a) One of the carpal bones, which articulates with the
       radius; the radiale.
   (b) One of the tarsal bones; the navicular bone. See under
       {Navicular}.

Source : WordNet®

scaphoid bone
     n : the largest wrist bone on the thumb side [syn: {os
         scaphoideum}, {navicular}]