名词大锤; 杀鸡用牛刀，小题大做

1. 长柄大锤：the axe 斧子 (美作:the ax) | sledgehammer 长柄大锤 | bushhammer 石工锤

2. 长柄锤：hammer 锤 | sledgehammer 长柄锤 | chisel 凿子

3. 双手使用的大锤：sledge 双手使用的大锤 | sledgehammer 双手使用的大锤 | sleek 使修光

1. (用于击碎岩石和混凝土的)大锤
A sledgehammer is a large, heavy hammer with a long handle, used for breaking up rocks and concrete.

2. 杀鸡用牛刀
If you say that someone is using a sledgehammer to crack a nut, you mean that they are using stronger measures than are really necessary to solve a problem.

noun

1. a heavy long-handled hammer used to drive stakes or wedges

Synonym: maulsledge