To enlarge a hole to receive the head of a bolt or a nut.
A furring strip which is below, and at right angles to, the battens.
Same as counterweight system.
A double-hung window constructed so that the weights of the upper and lower sashes balance each other.
An arch used to counteract the thrust of another arch.
An apse which is opposite another apse. Many such double apses have a crypt below the western apse.
1. A long horizontal surface used in stores, shops, banks, etc., for display of goods, for work-top areas, or for
In wire cloth, the number of openings per linear inch.
council school (Brit.) An elementary or secondary school supported by public taxes; similar to public school in US.
1. A piece of channeled or grooved timber, as one in which a frame slides. 2. An area backstage in