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

• buttock planes
• buttocks
• button
• button accordion
• button accordions
• button-back
• buttonball
• buttonbush
• button cell
• button cell batteries
• button cell battery
• button cells
• button chrysanthemum
• button chrysanthemums
• button-down
• buttoned
• buttoned-down
• buttoned up
• buttoned-up
• buttonhold
• buttonhole
• buttonholed
• buttonholer
• buttonholers
• buttonholes