bo's'n, bos'n see boatswain

boatswain (often bosun, bo'sun, bo's'n or bos'n) /bōˈsn/

1. The foreman of a crew (warrant officer in the navy) who looks after a ship's boats, rigging, flags, etc
2. The skua (prob from its aggressiveness)

boatˈswain-bird noun

The tropicbird

boatswain's call, boatswain's pipe or boatswain's whistle see under whistle

boatswain's chair noun (nautical)

A wooden seat slung from ropes, for a man working on a ship's side, rigging, etc

boatswain's mate noun

Boatswain's assistant

• undertrick
• under-tunic
• under-tunics
• under-turnkey
• under-turnkeys
• underuse
• underuses
• underutilisation
• underutilise
• underutilised
• underutilises
• underutilising
• underutilization
• underutilize
• underutilized
• underutilizes
• underutilizing
• undervaluation
• undervaluations
• undervalue
• undervalued
• undervaluer
• undervaluers
• undervalues
• undervaluing