leeward
Concise Oxford English Dictionary © 2008 Oxford University Press:
leeward /ˈliːwəd, ˈluːəd/
▶adjective & adverb on or towards the side sheltered from the wind or towards which the wind is blowing; downwind. Contrasted with windward. ▶noun the leeward side.
'leeward' also found in these Oxford entries:

