ˈsash ˌwindow BrE AmE noun [countable] British English
a window consisting of two frames that you open by sliding one up or down, behind or in front of the other
ˈsash ˌwindow BrE AmE noun [countable] British English
a window consisting of two frames that you open by sliding one up or down, behind or in front of the other
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012