Meaning of VALLEY in English
■ noun ( plural ~s )
1》 a low area between hills or mountains, typically with a river or stream flowing through it.
2》 Architecture an internal angle formed by the intersecting planes of a roof, or by the slope of a roof and a wall.
ME: from OFr. valee , based on L. vallis , valles ; cf. vale 1 .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004