1. The top of the skull.

2. The portion of a tooth above the gum.

A feature near the top of a terminal, such as the highest point of an arch.

1. The topmost part of a plant or plant part.

2. See <<corona>>

1. Center of a roadway elevated above the sides.

2. In plumbing, that part of a trap where the direction of flow changes from upward to horizontal or downward.

1. The part of a drill bit inset with diamonds.

2. The vertex of an arch or arched surface.

3. The top or dome of a furnace or kiln.

4. A high spot forming on a tool joint shoulder as the result of drill pipe wobbling.

The portion of a faceted gem above the girdle.

That part of the sheet or roll where the thickness or diameter increases from edge to center.

A horizontal roof member of a timber up to 16 feet (4.9 meters) long and supported at each end by an upright.