1. A drill for penetrating rock
   - borer, rock drill, stone drill

Derived forms: bore bits

Type of: drill

• mien
• mierkat
• Mies Van Der Rohe
• mifepristone
• miff
• miffed
• might
• might-have-been
• mightily
• mightiness
• mightn't
• mighty
• Mighty Mouse
• migmatite
• mignonette
• mignonette family
• migraine
• migrant
• migrant shrike
• migrate
• migration
• migration route
• migrational
• migrator
• migratory