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

• buttoning
• button-mould
• button mushroom
• button quail
• button quails
• buttons
• button scurvy
• button-through
• button up
• buttonwood
• buttonwoods
• buttony
• button your lip
• butt out
• buttress
• buttressed
• buttresses
• buttressing
• buttress-root
• buttress-roots
• buttress-thread
• buttress-threads
• butts
• butt-shaft
• butt-shafts