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

Derived forms: bore bits

Type of: drill

• pyrimidine
• pyrite
• pyrites
• pyro-
• pyrocellulose
• Pyrocephalus
• Pyrocephalus rubinus mexicanus
• pyrochemical
• pyrochemical process
• pyrochemistry
• pyroclastic
• pyroelectric
• pyroelectrical
• pyroelectricity
• pyrogallic
• pyrogallic acid
• pyrogallol
• pyrogen
• pyrogenetic
• pyrogenic
• pyrogenous
• pyrograph
• pyrographer
• pyrographic
• pyrography