a window that is made with two pieces of glass, each in a separate frame, that fit together so that one frame slides past the other when you want to open or close the window
Synonyms and related words
Doors and windows
back door
bay window
bow window
sash window
noun countable
US
Word Forms
singular
sash window
plural
sash windows
DEFINITIONS1
1
a window that is made with two pieces of glass, each in a separate frame, that fit together so that one frame slides past the other when you want to open or close the window