τρίναξ

English (LSJ)

ᾰκος, ἡ, (ἀκή (A))

   A like θρῖναξ, three-pronged mattock, AP6.104 (Phil.) [where ι is short].

German (Pape)

[Seite 1144] ακος, ἡ, der Dreizack, Philp. 14 (VI, 104), ξυλίνας.