thunderhead thunderful • thunderheaded · · · Info · Definitions · Characters · · thunderhead · · Text Latin · · Script 11 · · Length Definitions · · · (noun) a rounded projecting mass of a cumulus cloud with shining edges; often appears before a thunderstorm. · · Noun Definition 1 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075