Frog. An ornamental fastening for the front of men's coats and ladies' cloaks and waists, usually made of metal or braiding, and consisting of a spindle-shaped button attached by a cord, and corresponding with a loop on the opposite side of the garment. A pair of frogs fixed on the opposite side of the coat may allow of buttoning either way. On silk plush cloaks the frogs are generally of sealskin. [See Brandenburg]