| English noun: undercoat | 
| 1. | undercoat (artifact) seal consisting of a coating of a tar or rubberlike material on the underside of a motor vehicle to retard corrosion | 
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 | Synonyms | underseal | 
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 | Broader (hypernym) | seal | 
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| 2. | undercoat (artifact) the first or preliminary coat of paint or size applied to a surface | 
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 | Synonyms | flat coat, ground, primer, primer coat, priming, priming coat | 
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 | Broader (hypernym) | coat of paint | 
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 | Narrower (hyponym) | couch | 
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| 3. | undercoat (animal) thick soft fur lying beneath the longer and coarser guard hair | 
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 | Synonyms | underfur | 
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 | Broader (hypernym) | fur | 
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