锤子纹身

Quick answer：

A hammer tattoo refers to a tattoo design featuring a hammer, often associated with laborers, tradespeople, or as a symbol of strength and perseverance. Hammers can also be a part of more complex designs or symbols, such as the anvil and hammer, which is a traditional symbol of the blacksmith trade. In tattoo culture, hammers can have various meanings depending on the context and personal significance to the wearer.