Situated toward the east or on the part toward the east: as, the eastern side of a town or church; the eastern shore of a bay.Going toward the east, or in the direction of east: as, an eastern route.Coming from the east; easterly.Of or pertaining to the east; Oriental; being or occurring in the east: as, eastern countries; eastern manners; an eastern tour.n. A person living in or belonging to the eastern part of a country or region; specifically, one belonging to one of the countries lying east of Europe; an Oriental.n. [capitalized] A member of the orthodox Oriental or Greek Church: in contradistinction from a Latin or Western.