Plain English Meaning
The side the wind is hitting first — the side facing the wind.
Full Definition
The side of an obstruction, terrain feature, or structure that faces directly into the oncoming wind.
Context Anchor
Seen in discussions of how wind behaves near terrain and obstacles, especially when judging turbulence and downdrafts near obstructions.
Derivation
‘Windward’ comes from old sailing language: ‘wind’ plus ‘-ward’ meaning ‘toward.’ The windward side is the side the wind is coming toward you from. The opposite side is called ‘leeward.’
Why Pilots Care
Recognizing the windward side allows pilots to anticipate updrafts, downdrafts, and turbulence near ridges or obstacles, supporting safer route and altitude decisions.