BORING, in farriery, an operation in use for the cure of wrenched shoulders in horses. It is this; having cut a hole in the skin, over the part affected, they blow it with up a tobacco-pipe, as a butcher does a shoulder of veal; after which they thrust a cold flat iron, like the point of a sword-blade, eight or ten inches up between the shoulder-blade and the ribs: This they call boring.