词典释义：
coat or mark (something) messily or carelessly with a greasy or sticky substance
（用油或黏性物质随便胡乱）涂抹（某物）
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his face was smeared with dirt. 他的脸上满是污秽。
[with obj. and adverbial]spread (a greasy or sticky substance) over something
（在某物上）涂（油脂或黏性物质）
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she smeared sunblock on her skin. 她往皮肤上涂防晒霜。
〈喻〉 诽谤，诋毁
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someone was trying to smear her by faking letters. 有人通过伪造信件试图诋毁她的名誉。
messily blur the outline of (something such as writing or paint); smudge
弄污，弄脏（字画等）
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her lipstick was smeared. 她的口红被弄模糊了。
a mark or streak of a greasy or sticky substance
（油性的，黏性的）污迹，污斑
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there was an oil smear on his jacket .他夹克上有块油渍。
〈喻〉 诽谤
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the popular press were indulging in unwarranted smears. 通俗报刊充斥着毫无根据的诽谤。
a sample of material spread thinly on a microscope slide for examination, typically for medical diagnosis
（显微镜）涂片
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the smears were stained for cryptosporidium. 显微镜的涂片为观察隐孢子虫已经着色了。
short for
<Bold>SMEAR TEST</Bold>的简称。
【登山】 不稳立足处。
"Old English