ŏrīgănum and -on, i, n., and ŏrī-gănus, i, m., = ὀρείγανον, ὀρίγανον, and ὀρείγανος, or ὀρίγανος,
the plant wild-marjoram , origan , Plin. 20, 17, 67, § 175; Ser. Samm. 47, 879.
·noun A genus of aromatic labiate plants, including the sweet marjoram (O. Marjorana) and the wild m...
Webster's Dictionary of the English Language