Definition

Noun: A window lock is a type of lock specifically designed and attached to the sashes (the movable panels) of a double-hung window. Its primary function is to secure both the upper and lower sashes in a closed, or "shut," position to prevent the window from being opened.

Usage

A window lock is used to enhance the security of a window. It physically prevents the sashes from sliding up or down, making forced entry more difficult. It is a common security feature in homes and buildings.

Examples

• For safety, we installed a window lock on every first-floor window.
• The old window lock was rusty and difficult to open.
• Before going on vacation, check that all window locks are engaged.

Advanced Usage

• "to engage a window lock": to activate or fasten the lock.
  • Remember to engage the window lock before you leave.
• "keyed window lock": a type of window lock that requires a specific key to lock and unlock it, offering a higher level of security.
  • For the basement windows, we upgraded to keyed window locks.

Variants and Related Words

• Sash lock: A more technical or alternative term for a window lock, especially one that is integrated into the window's meeting rail.
• Window latch: A simpler fastening device for a window, which may not provide the same level of security as a dedicated lock. A latch is often a standard part of the window hardware, while a lock is frequently an added security feature.
• Double-hung window: The type of window (with two vertically sliding sashes) for which this lock is most commonly designed.

Synonyms

• Sash fastener
• Window fastener
• Sash lock

Related Phrases

• "Lock the window": The action of using the window lock.
  • It's getting cold; please lock the window.
• "Window security": The broader concept of protecting windows, which includes using window locks, security bars, or laminated glass.

Noun

1. a lock attached to the sashes of a double hung window that can fix both in the shut position