وردان doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has an entry for it. Select the entry below for the full classical Arabic definition.

• وَرْدَانَ

  بِنْتُ وَرْدَانَ ذ , (Msb,) pl. بَنَاتُ وَرْدَانَ, (K,) A certain insect, (Msb, K,) well known, (K,) like the beetle, of a red colour, mostly found in baths and in privies. (Msb.)…

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