thickhead thickety • thickheaded · · · Info · Definitions · Synonyms · Characters · · thickhead · · Text Latin · · Script 9 · · Length Definitions · · · (noun) Australian and southeastern Asian birds with a melodious whistling call. Synonyms: whistler. · · Noun Definition 1 Synonyms · · · whistler · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 k latin small letter k U+006B t latin small letter t U+0074