head

the top horizontal framing member of a window assembly

the total energy possessed by a unit weight of fluid due to its elevation, pressure, and velocity. It is expressed as a height in metres of fluid

<brick> end surface of a brick which may or may not show on the face of a wall
See Figure A.12
See also: face <brick>; header <masonry>

<frame> top member, usually horizontal, of a frame or opening lining
See also: door head; window head

<fluid> total energy possessed by a unit mass of fluid due its elevation (elevation head), pressure (pressure head) or velocity (velocity head)

See also: elevation head; friction loss head; maximum head; pressure head; static head; velocity head; working head; hydraulic gradient