boyau /bwoˈyō, bwäˈyō or boiˈō/ (fortification)

A communication trench

• usability
• usable
• usableness
• usablenesses
• usably
• USAF
• usage
• usager
• usagers
• usages
• USAID
• usance
• usances
• USB
• USCL
• USDAW
• use
• useability
• useable
• useableness
• useably
• use and wont
• use-by date
• used
• usedn't