Definitions

Ramón 2011: anthroponym, shortened form of pe-ri-to-wo (cf. pe-ri-mo, pe-ri-me-de; o-ku-no, o-ku-na-wo; etc.)
Ilievski 1996: anthroponym, perhaps shortened from Περίθοος

References

Ilievski, Petar Hr., 1996 Attí e memorie del secondo congresso internazionale di micenologia vol. 1 Filologia “The Mycenaean Personal Names in -to with regard to the derivatives from verbal adjectives”

Ramón, J.L. García, 2011 A Companion to Linear B: Mycenaean Greek Texts and their World vol. II (ed. Yves Duhoux and Anna Morpurgo Davies) “Mycenaean Onomastics”