naxium
Could not find naxio in Logeion dictionaries.
naxio neuter dative singular, neuter ablative singular of naxium
naxĭum, ii, n.,
- a stone used for polishing marble, which was found on the island of Cyprus and prepared in the city of Naxos, in Crete, Plin. 36, 7, 10, § 54; 37, 8, 32, § 109.