1) Turkish feminine given name 
Nilay is a female given name of Turkish origin, and a male name of Indian origin. People named Nilay include: ...
Nilay is a name for boys and girls. The meaning is `dark blue, deep` The name Nilay is most commonly given to Belgian boys. (22 times more often than to American boys.) In Flanders, Belgi?nd France it is (almost) solely given to girls