Source : Webster's Revised Unabridged Dictionary (1913)

Cuboid \Cu"boid\ (k?"boid), a. [Cube + -oid: cf. Gr. ???.]
   (Anat.)
   Cube-shaped, or nearly so; as, the cuboid bone of the foot.
   -- n. (Anat.) The bone of the tarsus, which, in man and most
   mammals, supports the metatarsals of the fourth and fifth
   toes.

Source : WordNet®

cuboid
     adj : shaped like a cube [syn: {cubelike}, {cube-shaped}, {cubical},
            {cubiform}, {cuboidal}]

cuboid
     n : a rectangular parallelepiped