1
the knocker on [noun]
指门环，常用于描述门上的装饰性敲击装置。
The brass knocker on the front door was polished.
前门上的黄铜门环被擦亮了。
门环
先理解核心含义，再看它在真实句子里的用法。
门环
a hinged ornamental device attached to a door, used for knocking
The brass knocker on the front door was polished.
前门上的黄铜门环被擦亮了。
门环
A device, usually hinged with a striking plate, used for knocking on a door.
敲门者
A person who knocks.
批评者,贬低者
A critic; one who disparages.
弹球机中发出响声的装置
A mechanical device in a pinball table that produces a loud percussive noise to signal that a free game has been earned.
I grabbed the heavy iron knocker and let it fall three times.
我抓住沉重的铁门环，让它落下来敲了三下。
The front door has a brass knocker shaped like a lion's head.
前门上有一个狮子头形状的黄铜门环。
She polished the old knocker until it shone.
她把旧门环擦得闪闪发亮。
指门环，常用于描述门上的装饰性敲击装置。
The brass knocker on the front door was polished.
前门上的黄铜门环被擦亮了。
指敲门的人，常用于描述有人来访但未出现的情况。
I heard a knocker at the door, but no one was there.
我听到有人在敲门，但没人回应。
俚语，指自吹自擂的人，使用频率较低。
Don't be such a knocker; no one is impressed by your stories.
别那么自夸，没人对你的故事感兴趣。
Not this
He knocker the door.
Use this
He knocks the door.
中文学习者可能将名词'knocker'误用作动词，正确应为动词'knock'（第三人称单数）。
Not this
I bought a new knock for the door.
Use this
I bought a new knocker for the door.
中文学习者可能混淆'knock'（敲击动作）与'knocker'（门环），门环应用'knocker'。
Not this
There are two knocker on the door.
Use this
There are two knockers on the door.
中文学习者可能遗漏复数词尾'-s'，'knocker'的复数形式为'knockers'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
门环
I need to repair the door knocker.
我需要修一下门环。
铜门环
The front door had a shiny brass knocker.
前门上有一个锃亮的铜门环。
前门门环
She used the front door knocker to announce her arrival.
她用前门门环敲门来宣告自己到了。
挨门挨户地（推销、游说等）
She paid her way through college by selling cosmetics on the knocker.
她靠挨家挨户推销化妆品来支付大学学费。
斯克鲁奇没有钥匙，正看着门环，这时门环的眼睛突然起了变化，门环的面孔变成了马利的面孔。
In Charles Dickens's A Christmas Carol, the miserly Scrooge sees the face of his dead business partner, Jacob Marley, appear in his door knocker before he enters his house.
在查尔斯·狄更斯的《圣诞颂歌》中，守财奴斯克鲁奇进屋之前，在门环上看到了已故生意伙伴雅各布·马利的面孔。
Use knocker naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想到 knock（敲）加 -er：门环是用来敲门的东西，爱敲打别人的人就是批评者。
语域：neutral 常见场景：front doors、older or traditional houses 该义项（门环）为中性日常词汇，通常用于描述安装在门上的敲击装置，多出现在老式住宅或传统建筑中，也可用于正式描写。
真正同韵的词：knock /nɒk/、locker /ˈlɒkə/、rocker /ˈrɒkə/、docker /ˈdɒkə/、soccer /ˈsɒkə/、shocker /ˈʃɒkə/，它们都包含重读的 /ɒ/ 和后面的 /k/ 或 /kə/。注意：knocker 中的 k 不发音，所以开头读 /n/，不是 /kn/；像 knowledge /ˈnɒlɪdʒ/ 和 knickers /ˈnɪkəz/ 这类形似词虽然也以 kn- 开头，但并不与 knocker 押韵。
Dictionary facts from ECDICT, WIKTIONARY.