jackhammer

A handheld machine for drilling rock and breaking up pavement, operated by compressed air.

a hammer having a strong steel cutting blade, driven by compressed air in multiple rapid strokes, and used for cutting through pavement, concrete, or other hard substances.

A portable percussive power tool that combines a hammer and chisel used to drill or break hard matter, for instance rock or concrete.

To use a jackhammer.

a hammer driven by compressed air