| Acronym | Meaning |
 | CK | Cocos (Keeling) Islands (FIPS 10-4 Country Code) - Cook Islands (ISO 3166 Digram) |
| WSW | West South-West |
| OM | Oman (ISO 3166 Digram) |
| NU | Nicaragua (FIPS 10-4 Country Code) - Niue (ISO 3166 Digram) - Nunavut (postal Symbol) |
| JPOW | Joint Project Optic Windmill |
| GIB | Gibraltar (ISO 3166 Trigram) |
| RB | Running Back (football) |
| ACP | Air Control Point |
| RWR | Radar Warning Receiver |
| TEST | Thesaurus Of Engineering And Scientific Terms |
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