Origanum

·noun A genus of aromatic labiate plants, including the sweet marjoram (O. Marjorana) and the wild marjoram (O. vulgare).

origanum
ŏrīgănum and -on, i, n., and ŏrī-gănus, i, m., = ὀρείγανον, ὀρίγανον, and ὀρείγανος, or ὀρίγανος, ...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.