simple past tense and past participle of jackhammer

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

(intransitive) To use a jackhammer. / (transitive) To break (something) using a jackhammer. / (transitive) To form (something) using a jackhammer.

plural of jackhammer

Third-person singular simple present indicative form of jackhammer

present participle of jackhammer