What does R stand for?

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Rerun

Radial Antenna

Relief

A term for clearance or clearance angle OR Carved or molded ornament that projects from a flat surface.

Rollicking

Rock

A rock is a group of minerals in a mixture. Volcanic rocks are excellent Examples of rocks created by the super-heated mixing of many minerals.

Race

Strong and rapid current in a small area of the sea; more especially when accompanies with disturbed water.

Rider

An additional rib on inside of sheathing of hold of a wooden vessel. A second tier of casks or barrels. A riding turn of rope.