a scabbard for [sword/dagger/bayonet]
The leather scabbard for the dagger was worn and old.
这把匕首的皮刀鞘又旧又破。
剑、匕首或刺刀的鞘
a sheath for a sword, dagger, or bayonet
剑鞘
The sheath of a sword.
剑、匕首或刺刀的鞘
a sheath for a sword or dagger or bayonet
He pulled the sword from its leather scabbard and inspected the blade.
他从皮革剑鞘中拔出剑，检查刀刃。
用法提示：句中 scabbard 是名词，指“剑鞘”，作 from 的宾语。
The knight cleaned the silver scabbard before the ceremony.
骑士在典礼前擦拭银色的剑鞘。
用法提示：此处 scabbard 为名词，意为“剑鞘”，作 cleaned 的宾语。
These old scabbards are displayed in the museum.
这些旧刀鞘在博物馆里展出。
用法提示：scabbards 是 scabbard 的复数名词形式，指“刀鞘”，作句子的主语。
The leather scabbard for the dagger was worn and old.
这把匕首的皮刀鞘又旧又破。
He drew the dagger from its scabbard.
他从刀鞘中拔出匕首。
动词 scabbard 表示把刀剑等放入鞘中，宾语通常是所收起的武器。
The soldier scabbarded his bayonet before marching.
士兵在行进前把刺刀插入鞘中。
sheath 比 scabbard 更常用，可泛指刀、剑、工具的护套；scabbard 特指刀剑的鞘，两者在指剑鞘时可互换，但 sheath 还可用于解剖学中的鞘（如肌腱鞘），scabbard 则不能。
grammar · medium
易错句子He drew his sword from scabbard.
正确表达He drew his sword from its scabbard.
scabbard 是可数名词；当它特指某把剑的剑鞘时，前面需要限定词（如 its/the/his）。中文说“从鞘中拔出剑”没有冠词，所以学习者容易漏掉限定词。
grammar · medium
易错句子She put the carving knife back into its scabbard.
正确表达She put the carving knife back into its sheath.
scabbard 专指剑、匕首或刺刀的鞘；一般刀具（如厨房刀）的外套应用 sheath。汉语里两者都可译作“鞘”，因此容易把 scabbard 用得过宽。
scabbard 只指刀、剑、刺刀的鞘；sheath 是通称，可指刀具套、工具套、电缆护套等。表示刀剑之鞘可用 scabbard，泛指保护套则用 sheath。
scabbard 装刀剑等冷兵器；holster 专装手枪，通常系在腰间或肩上。说枪套用 holster，不用 scabbard。
scabbard 佩带近身刀剑；quiver 是背在背上的箭袋。说箭筒用 quiver，不用 scabbard。
从剑鞘中拔出剑
He drew his sword from its scabbard.
他从剑鞘中拔出剑。
把剑收回鞘中
The officer wiped the blade and returned it to its scabbard.
军官擦净剑刃，把剑收回鞘中。
皮制剑鞘
The dagger hung from his belt in a leather scabbard.
匕首装在皮制剑鞘中，挂在他的腰带上。
刺刀鞘
He cleaned the mud off his bayonet scabbard.
他擦去刺刀鞘上的泥。
破釜沉舟；决一死战
Realizing there was no way back, he threw away the scabbard and gave the order to attack.
他意识到已无退路，便破釜沉舟，下令进攻。
Dictionary facts from ECDICT, WIKTIONARY.