D defs.my
Entry 1 sense Webster, 1913

jackhammer

· IPA /ˈd͡ʒækˌhæmɚ/
01 n. a hammer having a strong steel cutting blade, driven by compressed air in multiple rapid strokes, and used for cutting through pavement, co…
  1. 1.
    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.