portal tomb portal system • portal vein · · · Info · Definitions · Synonyms · Characters · · portal tomb · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a prehistoric megalithic tomb typically having two large upright stones and a capstone. Synonyms: dolmen, cromlech, portal tomb. · · Noun Definition 1 Synonyms · · · dolmen · · Synonym 1 cromlech · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074