I. ˈdēn noun
( -s )
Etymology: Middle English dene, from Old English denu valley; akin to Old English denn den — more at den
1. Britain : valley — often used in place names
2. Britain : a deep wooded valley ; especially : one with a stream flowing through it
II. noun
( -s )
Etymology: Middle English den, denne; probably akin to Old English dūn down (hill) — more at down
Britain : a sandy tract or low sand hill by the sea