Available Definitions:
1) v. t. - To strengthen with new force, assistance, material, or support; as, to reenforce an argument; to reenforce a garment; especially, to strengthen with additional troops, as an army or a fort, or with additional ships, as a fleet.
2) v. - Something which reenforces or strengthens.
3) v. - That part of a cannon near the breech which is thicker than the rest of the piece, so as better to resist the force of the exploding powder. See Illust . of Cannon.
4) v. - (b)
5) v. - An additional thickness of canvas, cloth, or the like, around an eyelet, buttonhole, etc.