Pronunciation: (dub'ul hung'), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/double-hung.html on line 73 [key]
1. (of a window) having two vertically sliding sashes, each closing a different part of the opening.
2. (of a window sash) sliding vertically, with a counterweight on each side.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.