1. plural of jackhammer: pneumatic tools used for breaking up concrete, pavement, or rock

1. third person singular present of jackhammer: operates a jackhammer on something

Examples

• The construction crew used jackhammers to break up the old sidewalk.
• Several jackhammers were working simultaneously on the road repair project.
• The noise from the jackhammers could be heard from blocks away.
• He jackhammers the concrete foundation every morning at the job site.
• The worker jackhammers through the asphalt to reach the water pipe below.
• Heavy-duty jackhammers are essential equipment for demolition work.
• She jackhammers the frozen ground to install the fence posts.