ballon d'essai /ba-lɔ̃ de-sāˈ/ (French)

1. An experimental balloon
2. A feeler or preliminary sounding of opinion

• chimney piece
• chimney pieces
• chimney pot
• chimney-pot hat
• chimney pots
• chimneys
• chimney shaft
• chimney shafts
• chimney stack
• chimney stacks
• chimney stalk
• chimney stalks
• chimney swallow
• chimney swallows
• chimney-sweep
• chimney-sweeper
• chimney-sweeps
• chimney swift
• chimney swifts
• chimney top
• chimney tops
• chimo
• Chimonanthus
• chimp
• chimpanzee