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

• go belly up
• gobe-mouches
• go better
• go between
• go-between
• go-betweens
• go beyond
• gobi
• gobies
• gobiid
• Gobiidae
• gobiids
• gobioid
• gobis
• go blank
• goblet
• goblet cell
• goblet cells
• goblets
• goblin
• goblins
• gobo
• goboes
• gobony
• gobos