Othello is referred to as the Moor because of his dark skin color. The term was initially used to describe people from the ancient Roman province, which is now North Africa, but over time the word "Moor" became an ambiguous term used to describe anyone who had dark skin. Because of this loose usage, it's impossible to tell exactly what Othello's race is supposed to be, but it's very clear that Shakespeare and the other characters in the play wish to establish him as an ''other,'' or someone who is not part of the mainstream.
The first characters that appear are the lieutenant, Iago, and Roderigo. Both of them highly intervene in the play but none of them mention Othello´s name. He is referred as ‘‘he’’ or ‘‘him’’ throughout the entire Act I. This both pronouns are commonly and well use and above all they do not have a classist background or a racist layer behind it.
They also called him ‘‘Barbary Horse’’ making from him an brown big animal far from the domestic area. How racist and intense is this nickname but at the same time how descriptive it is. Iago describe Othello to his girlfriend’s father, the Senator, as this bestial animal that has sexual appetite.
The last nickname, and the most important one that Othello has is ‘The Moor’, including in the main cover of the book as a complement of the title. It is the most important one because it does not only give us an idea of a black person it also gives as a religious and geographic idea of a Muslim African Black from Mauritania.