1. Plastering that is forced between laths to secure the rest of the plaster in place.

2. The roughening on a surface to be glued or plastered to increase adhesiveness.

A projecting portion that serves to prevent movement of parts at a construction joint.

A data item that serves to uniquely identify a data record.

1. An instrument that is inserted into a lock to operate the bolt.

2. A device used to move in some manner in order to secure or tighten.

3. One of the levers of a keyboard.

4. See <<machine key>>

1. A hand-operated switch used for transmitting code signals. Also known as signaling key.

2. A special lever-type switch used for opening or closing a circuit only as long as the handle is depressed. Also known as switching key.

The pieces of core causing a block in a core barrel, the removal of which allows the rest of the core in the barrel to slide out.

A cay, especially one of the islets off the south of Florida. Also spelled kay.

A hooklike wrench fitted to the square of a sucker rod to pull and run each sucker rod of a pumping oil well.

An arrangement of the distinguishing features of a taxonomic group to serve as a guide for establishing relationships and names of unidentified members of the group.