PET (2)
Source: 567
Pet, a. Petted; indulged; admired; cherished; as, a pet child; a pet lamb; a pet theory. Some young lady's pet curate. F. Harrison. Pet cock. [[Perh. for petty cock.]] (Mach.) A little faucet in a water pipe or pump, to let air out, or at the end of a steam cylinder, to drain it.