Entry 2 senses · 2 variants Webster, 1913 Dey /dā/ · IPA /deɪ/ n. n. 01 n. A servant who has charge of the dairy; a dairymaid. 1. A servant who has charge of the dairy; a dairymaid.[Obs.] 02 n. The governor of Algiers; -- so called before the French conquest in 1830. pl. Deys ((#)) 1. The governor of Algiers; -- so called before the French conquest in 1830.