From BiblePortal Wikipedia

King James Dictionary [1]

PA'GAN, n. L. paganus, a peasant or countryman, from pagus, a village. A heathen a Gentile an idolater one who worships false gods. This word was originally applied to the inhabitants of the country, who on the first propagation of the christian religion adhered to the worship of false gods, or refused to receive christianity, after it had been received by the inhabitants of the cities. In like manner, heather signifies an inhabitant of the heath or woods, and caffer, in Arabic, signifies the inhabitant of a hut or cottage, and one that does not receive the religion of Mohammed. Pagan is used to distinguish one from a Christian and a Mohammedan.

PA'GAN, a. Heathen heathenish Gentile noting a person who worships false gods.

1. Pertaining to the worship of false gods.

Webster's Dictionary [2]

(1): ( n.) Of or pertaining to pagans; relating to the worship or the worshipers of false goods; heathen; idolatrous, as, pagan tribes or superstitions.

(2): ( n.) One who worships false gods; an idolater; a heathen; one who is neither a Christian, a Mohammedan, nor a Jew.

Hastings' Dictionary of the New Testament [3]

See Heathen.

Baker's Evangelical Dictionary of Biblical Theology [4]

See The Nations