Without definite article. In later use usually with to.

The part of the horizon or of the sky where the sun rises; spec. the cardinal point which is 90 degrees… Without definite article.

The region in which the sun rises; the east.

That part of the heavens in which the sun and other celestial objects rise; the corresponding point of the compass, or the region of the earth…

†(a) the region or direction in which the sun rises, the east (obsolete); (b) the rising of the sun or the time at which this occurs, sunrise; also…

With definite article. See also at the eastward at at, prep. 1b.

The east; = eastward, n. Also with the.

The region in which the sun rises; the east.

With the. The east. Frequently literary and poetic.

poetic. The East, the Orient. rare.

poetic. The east. Obsolete.

The rising of the moon above the horizon; the time at which this occurs; †the east (obsolete).

the East; the Orient.

transferred. The east, the ‘orient’.