| Term | Definition | Contributor | Modified |
|---|---|---|---|
| Olustee, Fla., Battle of, 1864 | No definition provided | Christopher Rauch | 2023.12.01 |
| olvine | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Olympia (Cruiser) | No definition provided | Christopher Rauch | 2023.12.01 |
| Olympic games | No definition provided | Christopher Rauch | 2023.12.01 |
| Olympic games--Revival, ยก890-- | No definition provided | Christopher Rauch | 2023.12.01 |
| Olympite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Omaha Indians | No definition provided | Christopher Rauch | 2023.12.01 |
| Omaha Indians--Land transfers | No definition provided | Christopher Rauch | 2023.12.01 |
| Omayyads | No definition provided | Christopher Rauch | 2023.12.01 |
| Omayyads in Spain | No definition provided | Christopher Rauch | 2023.12.01 |
| Ombre (Game) | No definition provided | Christopher Rauch | 2023.12.01 |
| omega | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Omeiite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Omens | No definition provided | Christopher Rauch | 2023.12.01 |
| Omentum | No definition provided | Christopher Rauch | 2023.12.01 |
| Omeyyades | No definition provided | Christopher Rauch | 2023.12.01 |
| Ominelite | No definition provided | Ryan McGranaghan | 2023.04.16 |
| ominus | No definition provided | Ryan McGranaghan | 2023.04.16 |
| Ommiads | No definition provided | Christopher Rauch | 2023.12.01 |
| Omnibus bill. 1850 | No definition provided | Christopher Rauch | 2023.12.01 |