cat's-eye noun. ['katsʌɪ] fig. M16.
[from CAT noun¹ + -'S¹ + EYE noun.]
1. A gemstone, esp. a variety of chalcedony, which displays a lustre resembling the contracted pupil of a cat's eye. Also called sunstone. M16.

2. A speedwell, forget-me-not, or similar bright flower. E19.

3. The operculum of a turban shell. L19.

4. Also Cat's-eye. (Proprietary name for) a light-reflecting stud set into the surface of a road to demarcate traffic lanes etc. at night. M20.

[TahlilGaran] English Dictionary ▲