boyau /bwoˈyō, bwäˈyō or boiˈō/ (fortification)

A communication trench

• deckhouses
• decking
• deckings
• deckle
• deckled
• deckle-edge
• deckle-edged
• deckle-edges
• deckles
• deck-load
• deck-loads
• decko
• deckoed
• deck officer
• deck officers
• deckoing
• deckos
• deck out
• deck over
• deck-passage
• deck-passages
• deck passenger
• deck passengers
• deck quoits
• decks