radius
rex (“king”) or regina (“queen”); the initial by which a British monarch signs documents after his or her name
the Crown, the government of a monarchy (abbreviating rex (“king”) or regina (“queen”))
rook
Thursday
Republican
ring
runs, the statistic reporting the number of runs scored by a player
right (as opposed to left)
reverse
restricted
The eighteenth letter of the English alphabet, called ar and written in the Latin script.
In the context of the documentary hypothesis, the Redactor(s) who compiled and edited the Torah.
The length of this line segment.
The lighter bone (or fused portion of bone) in the forelimb of an animal.
A line segment between any point of a circle or sphere and its center.
The long bone in the forearm, on the side of the thumb.
One of the major veins of the insect wing, between the subcosta and the media; the vein running along the costal edge of the discal cell.
Anything resembling a radius, such as the spoke of a wheel, the movable arm of a sextant, or one of the radiating lines of a spider's web.