Thought to be an Americanism of the 1920's. The hammer part for obvious reasons. The Jack part because it referred to any portable device for raising heavy objects short heights. As in breaking and raising concrete
Jackhammers are usually 115 decibals, which is loud enough to give you hearing damage.
You can buy jackhammers at most industrial tool stores, or electric jackhammers at Hilti Stores.
jackhammers
'Jackhammer' is the singular form.
The plural form for the noun jackhammer is jackhammers.
dynamite, jackhammers, chisels, and hammers
WOW! Golly gee! Jumping Jackhammers! That sort of thing..
jackhammers, rams butting heads ad babies crying.
The Slow Mo Show - 2013 Construction Worker Jackhammers Rock 1-46 was released on: USA: 7 June 2013
You probably can tip the berg but there has to be alot of penguins on their jackhammers
Go to the mine on the map and then enter the hole with lights above it and there will be jackhammers on the wall and just click on it.
rock splitters--who separate rough dimensions of rock and ore using jackhammers, wedges, and feathers