1
a [adjective] overcoat
overcoat 是可数名词，前面可加形容词修饰。
She bought a warm overcoat.
她买了一件暖和的大衣。
大衣；外套
overcoats — plural of overcoat
先理解核心含义，再看它在真实句子里的用法。
大衣；外套
a heavy coat worn over clothes in winter
She bought a warm overcoat.
她买了一件暖和的大衣。
穿在其他衣服外面的厚重外衣,用以防寒或抵御天气。
A heavy garment worn over other clothes, for protection from cold or weather.
冬季穿在衣服外面的厚大衣
a heavy coat worn over clothes in winter
外层涂覆,外涂层(如油漆等)。
An outer coat, an outer coating (of paint, etc).
附加的保护涂层(如油漆或清漆)
an additional protective coating (as of paint or varnish)
He buttoned his overcoat before stepping out into the cold wind.
他在走进寒风前扣好了大衣。
She bought a new overcoat for the trip to Beijing.
她为北京之行买了一件新大衣。
People usually wear an overcoat over a suit in winter.
冬天人们通常把大衣穿在西装外面。
overcoat 是可数名词，前面可加形容词修饰。
She bought a warm overcoat.
她买了一件暖和的大衣。
介词 over 表示“穿在……外面”。
He wore a heavy overcoat over his suit.
他在西装外面穿了一件厚重的大衣。
Not this
He is wearing overcoat.
Use this
He is wearing an overcoat.
overcoat 是可数名词，单数形式前必须加冠词 an；汉语说“穿大衣”没有冠词，所以容易漏掉。
Not this
He is wearing his overcoat quickly.
Use this
He is putting on his overcoat quickly.
wear 表示穿着的状态，不能表示穿衣的动作；表达“正在快速穿上大衣”时要用 put on 的进行时，而不是 wear。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
厚大衣
He wore a heavy overcoat to protect himself from the bitter wind.
他穿着一件厚大衣抵御刺骨的寒风。
冬季大衣
She bought a new winter overcoat for her trip to Harbin.
她为哈尔滨之行买了一件新的冬季大衣。
羊毛大衣
This wool overcoat is warm but surprisingly light.
这件羊毛大衣很暖和，却出奇地轻。
穿大衣
You should wear an overcoat when you go out in December.
十二月份出门时你应该穿一件大衣。
扣好大衣
He buttoned up his overcoat before stepping outside.
他在出门前扣好了大衣。
我们都来自果戈理的《外套》。（此语常被引述为陀思妥耶夫斯基之语，形容果戈理对俄国文学的深远影响。）
He put on his heavy overcoat before leaving for work in the freezing morning.
他在寒冷的早晨出门上班前穿上了厚大衣。
发长 /oʊ/ 音 (如 boat, coat)
Use overcoats naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：over（在……之上）+ coat（外套）→ 套在衣服外面的厚外套，就是冬天的大衣。
语域：neutral 常见场景：winter wear、formal occasions “overcoat” 多指冬季穿在外套外面的大衣，属中性词，在书面和日常对话中都可以使用；正式场合或书面语中比较常见，日常口语里人们更常说 coat。
以上单词都以 /oʊt/ 结尾，与 overcoat 的结尾音节同韵。拼写上有 'oat'（boat, goat, float, throat）和 'ote'（note, vote）两种。注意 'broad' /brɔːd/ 虽含 'oa'，但发音为 /ɔː/，并不与它们押韵。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.