roger

roger \ROJ-er\, interjection:

1. Informal. all right; O.K.
2. message received and understood (a response to radio communications).
3. (often initial capital letter) Jolly Roger.
4. (formerly used in communications to represent the letter R.)

I gave him a roger and climbed into the hatch, pushing Teddy up and out.
-- Larry Heinemann, Close Quarters, 2010

"Roger, standing by, Sandy." Not another minute passed before he heard the sound of a siren.
-- Tom Clancy, The Teeth of the Tiger, 2004

This sense of the word roger comes from the military alphabet in which the name Roger meant "received." The male given name came from the Germanic words meaning "fame" and "spear."