The side or direction from which the wind is coming The windward side of a ship or boat is the one the wind blows onto The windward side of an island is next to the lee shore: the wind is blowing onto it, sometimes a dangerous place for a sailing vessel
The side of the boat from which the wind is coming from In breezy conditions, the windward side of the boat will be higher than the 'leeward' side as the boat heels over Water ballast and 'stacking' is used to keep the boat more stable