The Collaborative International Dictionary of English v.0.48:
Ayah \A"yah\, n. [Pg. aia, akin to Sp. aya a governess, ayo a tutor.] A native nurse for children; also, a lady's maid. [India] [1913 Webster] AyeWordNet (r) 3.0 (2006):
ayah n 1: (in India) a native nursemaid who looks after children