Definitions
1.nounAn autocrat or dominant critic, especially Samuel Johnson."1997: "Sitting at a table, drinking Ale, observing the Mist thro’ the Window-Panes, Mason forty-five, the Cham sixty-four." — Thomas Pynchon, Mason & Dixon"
2.nounA ruler over various Turkish, Tatar and Mongol peoples in the Middle Ages.
3.nounAn Ottoman sultan.
4.nounA noble or man of rank in various Muslim countries of Central Asia, including Afghanistan.
5.nounA caravanserai; a resting-place for a travelling caravan.