The term "Moor" can refer to several different meanings depending on its context.
1) In a historical and geographical sense, it refers to the Moors who were an ethnic group of Berbers living in North Africa during the Middle Ages. They invaded and conquered large parts of Europe including Spain where they established the Islamic Caliphate of Cordoba. The term "Moor" is also used to describe people from Morocco, Algeria or Tunisia.
2) In literature, particularly in Shakespeare's plays, it refers to a dark-skinned person, often an enemy character such as Othello in the play by the same name.
3) In hunting and fishing context, "moor" means land set aside for game preservation or public access for recreational purposes. It can also refer to a type of fly fishing where the flies are cast onto still water.