- [countable]
a tool with a handle and a heavy metal head, used for breaking things or hitting nails 锤子;榔头 

a gentle tap with a hammer 用锤子轻拍 He struck her on the head with a hammer. 他用锤子敲打她的头部。
Oxford Collocations Dictionaryverb + hammer- hit something with
- tap something with
- use
- …
- blow
- a hammer and chisel
- a hammer and nails
- hammer and sickle
- …
- [countable]
a tool with a handle and a wooden head, used by a person in charge of an auction (= a sale at which things are sold to the person who offers the most money) in order to get people’s attention when something is just being sold synonym gavel(拍卖用的)木槌 to come/go under the hammer (= to be sold at auction) 被拍卖 Forty modern Russian paintings went under the hammer at Christie’s today. 如今,在佳士得拍卖行拍下了40幅现代俄罗斯画。
- [countable]
a small wooden part inside a piano, that hits the strings to produce a sound 音槌 - [countable]
a part inside a gun that makes the gun fire 击铁 - [countable]
a metal ball attached to a wire, thrown as a sport Topics Sports: other sportsc2链球 - often the hammer[singular]
the event or sport of throwing the hammer 掷链球(运动) 

tool工具
in piano钢琴
in gun枪炮
sport体育运动
Word OriginOld English hamor, hamer, of Germanic origin: related to Dutch hamer, German Hammer, and Old Norse hamarr ‘rock’. The original sense was probably ‘stone tool’.
Idioms
hammer and tongs
- (informal)
if two people are at it hammer and tongs or go at it hammer and tongs, they argue or fight with a lot of energy and noise 激烈争吵(或打斗) We could hear the neighbours going at it hammer and tongs. 我们可以听到邻居们用锤子和钳子猛击它。

