What is the meaning of Sledgehammer?

A hammer that consists of a large, heavy, broad and flat block of metal (the head) attached to a handle typically 0.5 meter to 1 meter long. The sledgehammer's design is meant to allow it to be swung powerfully, and to distribute force over a wide area upon impact.

To strike (something) with a sledgehammer.

Completely lacking grace and dexterity.

Source: wiktionary.org