flat coat flat cap • flat file · · · Info · Definitions · Synonyms · Characters · · flat coat · · Text Common · · Latin · · Scripts 9 · · Length 2 · · Syllables Definitions · · · (noun) the first or preliminary coat of paint or size applied to a surface. Synonyms: flat coat, ground, primer, priming, primer coat, priming coat, undercoat. · · Noun Definition 1 Synonyms · · · ground · · Synonym 1 primer · · Synonym 2 priming · · Synonym 3 primer coat · · Synonym 4 priming coat · · Synonym 5 undercoat · · Synonym 6 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 f latin small letter f U+0066 l latin small letter l U+006C o latin small letter o U+006F t latin small letter t U+0074