Maenianum
Maenianum, a projecting gallery, balcony (devised by a Maenius)
Could not find Maenianis in Logeion dictionaries.
Maenianis Proper-name noun: neuter dative plural, Proper-name noun: neuter ablative plural of Maenianum
Maeniānum, ī, n., s. Maenius.
Maeniānum ī, n
- a projecting gallery, balcony (devised by a Maenius).