tourbillion /toor-bilˈyən/ or tourbillon /toor-bē-yɔ̃ˈ/

1. A swirl
2. A vortex
3. A whirlwind
4. A whirling firework
5. A whirling or revolving mechanism or system

• masterful
• masterfully
• masterfulness
• masterfulnesses
• master-hand
• master-hands
• masterhood
• masterhoods
• masteries
• mastering
• masterings
• master-joint
• master-joints
• master-key
• master-keys
• masterless
• masterliness
• masterlinesses
• masterly
• masterly inactivity
• master-mariner
• master-mariners
• master mason
• mastermind
• masterminded