head jamb

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head jamb, yoke

The horizontal member forming the top of a door opening; a doorhead.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Slide shims between the floor and the latch-side jamb until the head jamb is level.
Complete the window by assembling the head jamb and nailing overtop (Photo 6).
If your floor is slightly out of level, you'll have to scribe and saw off the bottom of one of the side jambs to make the head jamb level.