[vi'lɑ:jet]
n.
(古土耳其帝国的)省或主要行政区

Vilayet \Vi`la*yet"\, n. [Turk., from Ar. wil[=a]yah.]
One of the chief administrative divisions or provinces of the
Ottoman Empire; -- formerly called eyalet.

Eyalet \E`ya*let"\, n. [Turk., fr. Ar. iy[=a]lah.]
Formerly, one of the administrative divisions or provinces of
the Ottoman Empire; -- now called a {vilayet}.