sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Ohio Benefit Bank | **** |
| OTC Bulletin Board | *** |
| Ohio Brass Band | *** |
| oriented bounding boxes | *** |
| Orange Blossom Bridge | *** |
| Orange Blood Bank | *** |
| Omo Buitenspeel Bond | *** |
| Olive Branch Baby | *** |
| occult blood bead | ** |
| open brain biopsy | ** |
| order buyer barn | ** |
| Operation Black Board | ** |
| oakland bay bridge | ** |
| Optical Building Blocks | ** |
| Overflow Bit Bucket | ** |
| Oklahoma Business Bulletin | ** |
| Office of Bioengineering and Bioimaging | ** |
| Octopus Beer Bong | * |
| Old Bridge Breakers | * |
| On the Back Burner | * |
| Object Bounding Boxes | * |
| Odor Barrier Bag | * |
| One Billion Bits | * |
| Oper der Bundesstadt Bonn | * |
| Orthophoto Browser for Boston | * |
| Osterreichischer Bibliothekarinnen und Bibliothekare | * |
| Our Beloved Biff | * |
| Owner of Briarwood Bookstore | * |