dale

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A valley.

from The Century Dictionary.

• noun A vale; specifically, a space of level or gently sloping or undulating ground between hills of no great height, with a stream flowing through it.
• noun Nautical, a trough or spout to carry off water, usually named from the office it has to perform: as, a pump-dale, etc.
• noun 3. A hole.
• noun Synonyms Vale, Glen, etc. See valley.
• noun A dialectal variant (and earlier form) of dole.

from the GNU version of the Collaborative International Dictionary of English.

• noun A low place between hills; a vale or valley.
• noun A trough or spout to carry off water, as from a pump.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun UK a valley in an otherwise hilly area.
• noun A trough or spout to carry off water, as from a pump.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an open river valley (in a hilly area)