A kind of bit, invented by Chiffney, a jockey, which gives more leverage upon the curb than an ordinary bit.
1834. Medwin, Angler in Wales, II. xviii. 44. A mouth so callous that a Chiffney bit might have broken his jaw, but I defy it to have stopped him.
1844. Kinglake, Eöthen, xii. 175. If a man, and an Englishman, be not born of his mother with a natural Chiffney-bit in his mouth, there comes to him a time for loathing the wearisome ways of society.