Definition |
Category |
| Office of Solid Waste | State & Local |
| Old School Wrestling | Wrestling |
| Official Scrabble Words | Sports |
| Orsk, Russia | Airport Codes |
| Open Systems World | News & Media |
| Outer Space Wetworks | Companies & Firms |
| Oley Sled Works | Companies & Firms |
| One-Stop Wholesaler | Companies & Firms |
| Open Sim Wheel | Unclassified |
| One Scatter Window | Unclassified |
| One Sheet Wonder | Unclassified |
| Occupied Structural Worker | Unclassified |
| Officer Safety and Wellness | Unclassified |
| Off System War | Unclassified |
| Office of Saline Water | Unclassified |
| One Sixth Warriors | Unclassified |
| Open Source Workshop | Workshops |
| Ośrodek Studiów Wschodnich | Unclassified |
| Occupied Structural Www | Unclassified |
| Omni Sense Workshop | Workshops |
| Outer Spore Wall | Unclassified |
| Office of Surface Water | Unclassified |
| Omni Sense | Unclassified |
| One Sixth Warrior | Unclassified |
| Operation Southern Watch | Unclassified |
| Old School Works | Schools |
| Open Sound World | Unclassified |
| Operation Specialist Weapon | Military |
| Operational Special Weapon | Military |
| Outstanding Warrant | Nazi Regime |
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