a weapon with a long metal blade (= sharp cutting part) and a handle 剑；刀 
to draw/sheathe a sword (= to take it out of/put it into its cover) 拔剑；把剑插入鞘
Extra ExamplesTopics Historyc1, War and conflictc1I thrust my sword into his chest. 我把剑刺入了他的胸膛。 the sword of justice 正义之剑
Oxford Collocations Dictionaryadjective- long
- short
- sharp
- …
- be armed with
- carry
- hold
- …
- arm
- belt
- blade
- …
- sword of
- be put to the sword
- the blade, edge, hilt, tip, etc. of a sword
More Like This Silent lettersSilent lettersWord OriginOld English sw(e)ord, of Germanic origin; related to Dutch zwaard and German Schwert.
Idioms
be a double-edged/two-edged sword/weapon
to be something that has both advantages and disadvantages 既有优点也有缺点；是一把双刃剑 Fame is a double-edged sword. 名声是一把双刃剑。
cross swords (with somebody)
to fight or argue with somebody （与某人）交锋，争论
the pen is mightier than the sword
- (saying)
people who write books, poems, etc. have a greater effect on history and human affairs than soldiers and wars 笔诛胜于剑伐
put somebody to the sword
- (old-fashioned or literary)
to kill somebody with a sword 用剑刺死某人 All the men were put to the sword. 所有的人都惨遭屠杀。
a/the sword of Damocles
- (literary)
a bad or unpleasant thing that might happen to you at any time and that makes you feel worried or frightened 达摩克利斯之剑（喻指令人忧虑或畏惧的、随时可能降临的灾祸）
turn swords into ploughshares
- (literary)
to stop fighting and return to peaceful activities 铸剑为犁；化干戈为玉帛；偃武修文