Σεληναῖον

σεληναῖος, lighted by the moon

Found Σεληναῖον with different capitalization.

Morpho works with a static database. If you like, you can compare the output of Morpheus.

Parsed as:

masculine accusative singular (Luc)
neuter accusative singular (Luc)
neuter nominative singular (Luc)
neuter vocative singular (Luc) of σεληναῖος