Bailly
ou πρηγορών, ῶνος (ὁ) jabot des oiseaux, AR.
Eq. 374, Av. 1113.
Étym. πρό, ἀγείρω.
Bailly 2020 Hugo Chávez Gérard Gréco, André Charbonnet, Mark De Wilde, Bernard Maréchal & contributeurs / Licence Creative Commons Attribution - Pas d'Utilisation Commerciale - Pas de Modification — « CC BY-NC-ND 4.0 »
LSJ
ῶνος, ὁ, crop of birds, Ar. Eq. 374 (metaph of Cleon), Av. 1113 (πρηγορῶνα, ῶνας cj. Bentley); from πρό, ἀγείρω, because birds collect their food there before it passes into the second stomach, Hsch., Poll. 2.204, EM 688.33, Suid., Apollonius ap. Zonar. ; written προηγορεών, EM l.c., cf. Suid.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
ῶνος, ὁ, = προηγορεών, Ar. Eq. 374, Av. 1113.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)