φλύος
From LSJ
νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
English (LSJ)
[ῠ], εος, τό, = φλύαρος, idle talk, foolery, Archil.197.
German (Pape)
[Seite 1293] τό, = φλύαρος, Geschwätz, Possen, Archil. fr. 113 bei Eust.
Greek (Liddell-Scott)
φλύος: τό, = φλύαρος, ματαιολογία, φλυαρία, μωρολογία, Ἀρχίλ. 187 (174).