sledgehammer
n. B2 Upper Intermediate US //ˈsɫɛdʒˌhæmɝ// UK //slˈɛdʒhæmɐ// sledge·ham·mer
n. a heavy hammer with a flat head used for breaking things like stone or ice. It is much heavier than a regular hammer.
n. a heavy hammer with a broad, flat head, typically used for breaking stone, ice, or other hard materials.
He used a sledgehammer to break the frozen lock.
The construction workers used a sledgehammer to remove the old concrete foundation before starting the new project.
While a regular hammer might chip the surface, a sledgehammer is necessary to drive the heavy post deep enough into the frozen ground.
Compound of sledge + hammer.