upwind

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upwind

1. going against the wind
2. on the windward side
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

upwind

[′əp¦wind]
(meteorology)
In the direction from which the wind is flowing.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.