Canon bone : The shank bone, or great bone above the fetlock, in the fore and hind legs of the horse and allied animals, corresponding to the middle metacarpal or metatarsal bone of most mammals. See Horse.

Example:


Taxonomy
canon, bone, shank bone, rule, Anat, fetlock, hind, legs, horse, Dictionary, metatarsal bone, Bizzy Bone, Unanswered questions, Webster 1913, animals, metacarpal, mammals, cannon bone.

Defination from the web:
bone [F. canon , fr. L. canon a rule. See canon .] (Anat.) The shank bone, or great bone above the fetlock, in the fore and hind legs of ... the fetlock, in the fore and hind legs of the horse and allied animals, corresponding to the middle metacarpal or metatarsal bone of most mammals. ...