abbreviation
1. field officer
2. firm offer
3. flag officer
4. flight officer
5. flying officer
6. foreign office
7. for orders
8. forward observer
9. free overside
10. fuel oil
11. full organ
12. full out
abbreviation
1. field officer
2. firm offer
3. flag officer
4. flight officer
5. flying officer
6. foreign office
7. for orders
8. forward observer
9. free overside
10. fuel oil
11. full organ
12. full out
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012