Farmers Slang & Its Analogues. 18901909, rev. 2022.
Relieving-officer
subs. phr.See quot.
1
1883. GRENVILLE MURRAY, People I Have Met, 227. Now the RELIEVING OFFICER, or, for brevitys sake, the R. O., was a term of endearment which the Honourable Felix, in common with other young noblemen and gentlemen at Eton, applied to his father.