(1):
(a.) Obstinate in disobedience; contumacious; stubborn; unmanageable; as, a refractory child; a refractory beast.
(2):
(a.) Resisting ordinary treatment; difficult of fusion, reduction, or the like; - said especially of metals and the like, which do not readily yield to heat, or to the hammer; as, a refractory ore.
(3):
(n.) OPottery) A piece of ware covered with a vaporable flux and placed in a kiln, to communicate a glaze to the other articles.
(4):
(n.) Refractoriness.
(5):
(n.) A refractory person.