oak fern oak family • oak fly · · · Info · Definitions · Synonyms · Characters · · oak fern · · Text Common · · Latin · · Scripts 8 · · Length Definitions · · · (noun) bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere. Synonyms: Gymnocarpium dryopteris, Thelypteris dryopteris. · · Noun Definition 1 Synonyms · · · oak · · Synonym 1 oak tree · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 f latin small letter f U+0066 k latin small letter k U+006B n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072