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

• hummable
• hummaum
• hummed
• hummel
• hummel bonnet
• hummelled
• hummeller
• hummellers
• hummelling
• hummels
• hummer
• Hummer
• hummers
• humming
• humming ale
• hummingbird
• hummingbirds
• hummings
• humming-top
• humming-tops
• hummle bonnet
• hummock
• hummocked
• hummocks
• hummocky