Definitions of eastern:

• adjective:   lying toward or situated in the east

  Example: "The eastern end of the island"

• adjective:   relating to or characteristic of regions of eastern parts of the world

  Example: "The Eastern Hemisphere"

• adjective:   of or characteristic of eastern regions of the United States

  Example: "The Eastern establishment"

• adjective:   from the east; used especially of winds
• adjective:   lying in or toward the east

  Example: "Eastern cities"

• name:  A surname (very rare: popularity rank in the U.S.: #73304)