LSJ
= πέρυσι, Supp.Epigr. 4.707.7 (Cyzicus); — hence περσύας (sc. οἶνος), ὁ, for περυσίας (περισύας codd.), last year΄s wine, Hp. ap. Gal. 19.130; and περσυνός, = περυσινός, Dura.4 97 (iii AD), PSI 1.50.12 (iv/v AD); περισυνός codd. Gal. l.c.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)