jackhammer

jack·ham·mer

noun \ˈjak-ˌha-mər\

: a heavy tool used to break hard substances (such as concrete) into pieces by a repeated pounding action

Full Definition of JACKHAMMER

1

:  a pneumatically operated percussive rock-drilling tool usually held in the hands

2

:  a device in which a tool (as a chisel for breaking up pavements) is driven percussively by compressed air

— jackhammer verb

First Known Use of JACKHAMMER

1916

Rhymes with JACKHAMMER

clawhammer, drop hammer, enamor, flimflammer, programmer, sledgehammer, trip-hammer, windjammer