masse (outil) → sledgehammer
Une masse est un outil de percussion manié à deux mains. Elle est principalement utilisée en maçonnerie lors des travaux de démolition.
Wikipédia
A sledgehammer is a tool consisting of a large, flat head attached to a lever (or handle). The head is typically made of metal. The sledgehammer can apply more impulse than other hammers, due to its large size. Along with the mallet, it shares the ability to distribute force over a wide area. This is in contrast to other types of hammer, which concentrate force in a relatively small area.
Wikipedia
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