hardpan hard palate • hard-plucked · · · Info · Definitions · Synonyms · Characters · · hardpan · · Text Latin · · Script 7 · · Length 2 · · Syllables Definitions · · · (noun) crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions. Synonyms: caliche. · · Noun Definition 1 Synonyms · · · caliche · · Synonym 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 h latin small letter h U+0068 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072