Definition

Noun: A sash window is a type of window constructed with one or more movable panels, called sashes, which are designed to slide open, typically in a vertical direction, to allow ventilation. The classic design features two sashes that counterbalance each other, allowing them to stay open at a desired height.

Usage

This term is used to describe a specific architectural style of window, common in Georgian, Victorian, and other period homes. It refers to the complete window unit, including its frame and the sliding sashes.

Examples

• The old house still had its original wooden sash windows.
• To cool the room, she raised the lower sash window by a few inches.
• Modern double-glazed sash windows are much more energy-efficient than the old single-pane versions.

Advanced Usage

• Double-hung sash window: This is the most common type, where both the upper and lower sashes can move.
• Single-hung sash window: A variation where only the bottom sash is movable, and the top sash is fixed.

Variants and Related Words

• Sash (noun): The individual framed panel of glass that forms the movable part of the window. (e.g., "The lower sash was painted shut.")
• Window sash (noun phrase): Another way to refer to the movable panel itself.
• Casement window (noun): A different window style where the sash is hinged at the side and opens outward like a door, often contrasted with a sash window.

Synonyms

• Gliding window (This is a more general modern term; "sash window" implies a specific traditional design and counterbalance mechanism.)
• Double-hung window (This is often used synonymously with "sash window," though technically it specifies a type of sash window.)

Related Phrases

• Sash cord / sash chain: The cord or chain attached to the sash weights inside the window frame, which counterbalances the sash.
• Sash weight: The heavy weight concealed in the window frame that balances the sash, making it easy to lift and hold in place.
• Stuck sash: A common phrase describing a sash window that is difficult or impossible to open due to paint or warping.

Noun

1. a window with (usually two) sashes that slide vertically to let in air