One of the single or double joists or rafters that go around an opening in the framing type of construction.

1. A piece of bent wire used to regulate the size of the flame of a safety lamp without removing the top of the lamp.

2. A worker who arranges coal in the hold of a vessel (miner, ship) as the coal is discharged into it from bins.

3. A person who cleans miners' lamps.

4. An apparatus for trimming a pile of coal into a regular form (as a cone or prism).

5. See <<rib hole>>