A jamb (from French jambe, “leg”), in architecture, is the side-post or lining of a doorway or other aperture. The jambs of a window outside the frame are called “reveals.” Small shafts to doors and windows with caps and bases are known as “jamb-shafts”; when in the inside arris of the jamb of a window they are sometimes called “scoinsons.”
A doorjamb, door jamb (also sometimes doorpost) is the vertical portion of the door frame onto which a door is secured. The jamb bears the weight of the door through its hinges, and most types of door latches and deadbolts extend into a recess in the doorjamb when engaged, making the accuracy of the plumb (i.e. true vertical) and strength of the doorjambs vitally important to the overall operational durability and security of the door.The word “jamb” is also used to describe a wing of a building, perhaps just in Scottish architecture. John Adam added a ‘jamb’ to the old Leith Customs house in the Citadel of Leith in 1754-1755.
(also window sill) A horizontal slat which forms the base of a window.
“She looked out the window resting her elbows on the window sill.”
A horizontal, structural member of a building near ground level on a foundation or pilings or lying on the ground in earth-fast construction and bearing the upright portion of a frame. Also called a ground plate, groundsill, sole, sole-plate, mudsill. An interrupted sill fits between posts instead of being below and supporting the posts in timber framing.
A horizontal layer of igneous rock between older rock beds.
A piece of timber across the bottom of a canal lock for the gates to shut against.
A raised area at the base of the nasal aperture in the skull.
“the nasal sill”
The inner edge of the bottom of an embrasure.
A young herring.
The shaft or thill of a carriage.
Either of the vertical components that form the side of an opening in a wall, such as that of a door frame, window frame, or fireplace.
Any thick mass of rock that prevents miners from following the lode or vein.
To fix or attach a jamb to.