spackle spack • spackling compound · · · Info · Definitions · Synonyms · Characters · · spackle · · Text Latin · · Script 7 · · Length 2 · · Syllables Definitions · · · (noun) powder (containing gypsum plaster and glue) that when mixed with water forms a plastic paste used to fill cracks and holes in plaster. Synonyms: spackling compound. · · Noun Definition 1 Synonyms · · · spackling compound · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 k latin small letter k U+006B l latin small letter l U+006C p latin small letter p U+0070 s latin small letter s U+0073