air force 
noun
A branch of the armed forces concerned with fighting or defence in the air.Nigeria's military consists of an army, a navy, an air force, and a police force....
- There was a huge evacuation, the army, the air force and the navy were all involved.
- That was why they had to come with their army, their air force and their navy.
- black-legged kittiwake
- black letter
- black-letter day
- black level
- black light
- black lion tamarin
- black-lip
- black liquor
- blacklist
- blacklister
- black literature
- black locust
- black lovage
- black lung
- blackly
- black magic
- blackmail
- blackmailable
- blackmailer
- black majority
- black malt
- black mamba
- black man
- black mangrove
- black maple