Definition

Noun: 1. A vertical side post or piece forming the side of a doorway, window frame, or fireplace: In architecture and construction, a jamb is the main vertical component that forms the side of an opening and to which a door, window, or other structure is attached.

Usage

The word "jamb" is a technical term used primarily in the fields of architecture, construction, and carpentry. It refers to the structural side pieces of an opening. * It is most commonly used in the phrases door jamb and window jamb. * It is a countable noun.

Examples

• Noun:
  • The door was stuck because the lock bolt was misaligned with the strike plate on the jamb.
  • He carefully measured the width between the two jambs before ordering the new window.
  • The paint on the window jamb was peeling.

Advanced Usage

• "Door jamb": The specific vertical frame member on either side of a door opening. It typically houses the hinges (on the hinge jamb) and the strike plate for the latch (on the latch jamb or strike jamb).
  • Install the new hinges securely into the door jamb.
• "Window jamb": The vertical sides of a window frame.
  • Condensation had formed on the interior window jamb.
• "Fireplace jamb" or "Chimney jamb": The vertical sides of a fireplace opening.
  • The antique andirons stood against the stone fireplace jamb.

Variants and Related Words

• Doorjamb / Window jamb (noun, often written as one word or hyphenated): A common compound form specifying the type of opening.
  • The doorjamb was splintered from the forced entry.
• Jamb liner (noun): An insulating or finishing strip inserted into a window jamb.
• Jamb extension (noun): A piece of wood added to a window jamb to bring it flush with the interior wall surface.

Synonyms

• Post: A long, sturdy piece of timber or metal set upright. (Less specific; a jamb is a type of post.)
• Upright: A vertical structural element. (General term; a jamb is a specific upright.)
• Reveal: In architecture, this can refer to the side of an opening between a frame and the outer surface of a wall. (Related but not identical; the reveal is often the visible surface of the jamb.)

Notes on Meaning

The core meaning of "jamb" is consistently the vertical side member of an architectural opening. Its specific application changes based on the type of opening (door, window, fireplace). It does not refer to the horizontal top piece (which is the head or lintel) or the bottom piece (the sill or threshold).

Noun

1. upright consisting of a vertical side member of a door or window frame