A man using a jackhammer.
a portable type of pneumatic hammer, used for breaking up concrete, rock, etc.
Origin of jackhammerjack- + hammer
A handheld machine for drilling rock and breaking up pavement, operated by compressed air.
(third-person singular simple present jackhammers, present participle jackhammering, simple past and past participle jackhammered)
- To use a jackhammer.