Cha*toy"ant (?), a. [F., p. pr. of chatoyer to be chatoyant, fr. chat cat.] Min.
Having a changeable, varying luster, or color, like that of a changeable silk, or of a cat's eye in the dark.
© Webster 1913.
Cha*toy"ant, n. Min.
A hard stone, as the cat's-eye, which presents on a polished surface, and in the interior, an undulating or wary light.
© Webster 1913.