A wind blowing from the west; = "westerly".

Situated or lying (further) to the west; western, westerly. Frequently in place names (especially in Scotland and Newfoundland).

Of the sun or other celestial object: to travel westward in its course; to decline towards the west.

Of the wind: to change to a more westerly direction; to blow more strongly from the west.

To move (further) west; in later use especially with reference to migration westward across North America.