Definitions for jackhammerˈdʒækˌhæm ər
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Random House Webster's College Dictionary
jack•ham•merˈdʒækˌhæm ər(n.)
a portable drill operated by compressed air and used to drill rock, break up pavement, etc.
Category: Building Trades
Princeton's WordNet
air hammer, jackhammer, pneumatic hammer(noun)
a hammer driven by compressed air
Wiktionary
jackhammer(Noun)
A portable percussive power tool that combines a hammer and chisel used to drill or break hard matter, for instance rock or concrete.
jackhammer(Verb)
To use a jackhammer.
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