LSJ
η, ον, of a herald, ῥάβδος Suid. κηρυκίνη, ἡ, = κηρύκαινα, Hsch., Phot. ; but (sc. ἀρχή), crier΄s office, CPR 232.29 (ii/iii AD).
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
den Herold betreffend, des Herolds ; ῥάβδος, Heroldstab, Suid.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)