νησίτης
From LSJ
ἀγεωμέτρητος μηδεὶς εἰσίτω → no one ignorant of geometry may enter, let no one ignorant of geometry enter, let no one ignorant of geometry come in
English (LSJ)
[ῑ], ου, ὁ, (νῆσος)
A of, from, or belonging to an island, St.Byz.:—Dor. fem. νᾱσῖτις, ιδος, γῆ PEleph.20.48 (iii B.C.); σπιλάς AP7.2 (Antip. Sid.).