General

Tracery adorning a wall or panel but not pierced through.

An obliquely-set slat (as in a shutter), which serves to shed rain but to admit light.

A seat in an auditorium having an obstructed or partially obstructed view of the stage.

In an auditorium, a row of seats having its first seat at a side aisle and its last seat at

A small-headed pin having an expandable shank for joining light pieces of metal.

A mortise whose depth is less than the thickness of the piece into which it is cut, so that it