officer of the day

noun, Military
1.
an officer who has charge of the guard and prisoners on an assigned day at a military installation.
Abbreviation: OD, O.D., O.O.D.
Origin
1835-45

officer of the deck

noun
1.
a naval duty officer responsible for the operation of the ship in the absence of the captain or the executive officer.
Abbreviation: O.O.D.
British Dictionary definitions for ood

officer of the day

noun
1.
a military officer whose duty is to take charge of the security of the unit or camp for a day Also called orderly officer
ood in Technology
Related Abbreviations for ood

OOD

officer of the deck