from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A military officer who, for a given day, assumes responsibility for security, order, and supervision of the guard.
from the GNU version of the Collaborative International Dictionary of English
- n. the officer who, on a given day, has charge for that day of the guard, prisoners, and police of the post or camp; abbreviated O. D., OD, or O. O. D.
Sorry, no etymologies found.
He was officer of the day and he would have to organise the picquets, inspect the lines, scrape together some supplies from the Commissary, who would have none.
The officer of the day said that he had inspected my quarters soon after I went to the Fencing Academy and found everything in order, and that it must have been done within a half hour.
While taking the pail the officer of the day approached me and most politely asked: "Going for water, Mr. Flipper?"
It was Stifle, who had been officer of the day at the Information Office.
Of course he is surprised, and the more so when the officer of the day inspects for his -- the plebe's -- satisfaction the sentry-box, and finds no one there.
Not even the officer of the day usually bothered to spend the latenight hours at the cluttered desk provided in one corner of the comm area.