Jamb

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jamb

[jam]
(building construction)
The vertical member on the side of an opening, as a door or window.
(mining engineering)
A vein or large block of rock that prevents miners from following a vein of ore.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Jamb

The vertical member at the side of a window, door, chimney, or other exterior opening.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

jamb

window jamb
door jambs
One of the vertical members at each side of an opening such as a doorframe, window frame, or fireplace.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Surface Protection will be provided in the forms of RamBoard floor protection and adjustable width Jamb Guard.
On a bright winter's day, these colours also reflect off opposite jambs to add pastels into the overall mix of the architecture's palette.
The "jambs" also create a separation of two spaces and a gracious transition from foyer to living room, Custom ceiling panels that match the doors are fitted with cast aluminum return air registers.
Regardless of the methods used, new entry door frame designs help prevent jambs from rotting.
But you may find windows secured by nails put through the jambs into the surrounding studs.
Other door systems available on the market are limited by their jambs and the hardware of typical door designs.
If you're installing a door on a finished floor and the floor isn't level, you'll have to cut a little off the bottom of one of the jambs.
Out-of-plumb jambs or a warped door can cause this.
So I removed the casing and jambs. Then it wouldn't fit through the family room door, so I took off those casings and jambs, too.
Then hold the miter joint together, making sure the trim pieces arc; held parallel to the door or window jambs, and check the fit.
If you feel cold air flowing out from behind the trim, chances are the spaces around the window and door jambs weren't properly sealed.