Downwind (adverb)

1. In the direction that the wind is blowing; with the wind at one's back.
2. Located or situated in the direction that the wind is blowing.

Origin:

From the direction in which the wind is blowing, with 'down' indicating the direction of the wind's flow.

Examples:

1. The sailors set their sails downwind and swiftly moved across the sea.
2. The airport was located downwind of the industrial park, causing air pollution concerns.