Coming from the east; as, it was easterly wind.

a wind from the east

from the east; used especially of winds; "an east wind"; "the winds are easterly"

Situated, directed, or moving toward the east; as, the easterly side of a lake; an easterly course or voyage.

lying in or toward the east; "the east side of NY"; "eastern cities"

Toward, or in the direction of, the east.