σύρφαξ
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)
ᾱκος, ὁ,
A = συρφετός 2a, Ar.V.673 (anap.), Luc.Lex.4, etc. II as Adj., = συρφετώδης, δῆμος Anon. ap. Suid.