any of certain gems having a chatoyant luster, especially chrysoberyl.
a playing marble marked with eyelike concentric circles.
Historical Examples

Dulcie recognised at once the curious colouring of a catseye.
The Rainbow Book Tales of Fun & Fancy Mabel Henriette Spielmann

At every change of form a catseye will disappear and return to me.
The Rainbow Book Tales of Fun & Fancy Mabel Henriette Spielmann

trademark (Brit) a glass reflector set into a small fixture, placed at intervals along roads to indicate traffic lanes at night
any of a group of gemstones, esp a greenish-yellow variety of chrysoberyl, that reflect a streak of light when cut in a rounded unfaceted shape
Also called ataata. a grazing marine gastropod, Turbo smaragdus, of New Zealand waters


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