jackhammer

2 definitions found

jackhammer - Collaborative International Dictionary of English v.0.48 :

  jackhammer \jackhammer\ n.
     a hammer having a strong steel cutting blade, driven by
     compressed air in multiple rapid strokes, and used for
     cutting through pavement, concrete, or other hard substances.
  
     Syn: air hammer, pneumatic hammer.
          [WordNet 1.5]

jackhammer - WordNet (r) 2.1 (2005) :

  jackhammer
      n 1: a hammer driven by compressed air [syn: air hammer,
           jackhammer, pneumatic hammer]