mandrel or mandril /manˈdrəl/

1. A bar of iron fitted to a turning-lathe on which articles to be turned are fixed
2. The axle of a circular saw
3. A miner's pick

• ball-busting
• ball cartridge
• ballclay
• ballclays
• ballcock
• ballcocks
• ball-dress
• ball-dresses
• balled
• balled-up
• ballerina
• ballerinas
• ballerine
• ballet
• ballet-dancer
• ballet-dancers
• ballet-dancing
• balleted
• ballet-girl
• ballet-girls
• balletic
• balletically
• balleting
• ballet-master
• ballet-masters