Dictionary
jackhammer
jackhammer
noun jack·ham·mer \ˈjak-ËŒha-mÉ™r\
: a heavy tool used to break hard substances (such as concrete) into pieces by a repeated pounding action
Full Definition of JACKHAMMER
1
:Â a pneumatically operated percussive rock-drilling tool usually held in the hands
2
:Â a device in which a tool (as a chisel for breaking up pavements) is driven percussively by compressed air
— jackhammer verb
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First Known Use of JACKHAMMER
1916
Rhymes with JACKHAMMER
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