LSJ
ἡ, nickname of a certain Philoxenus, Men. 276, Axionic. 6.2. (Origin unknown; not from πτέρνη III, since πέρνα first occurs in Roman times.)
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
der Schinkenhauer, Spottname eines Schmarotzers, Axionic. bei Ath. VI.239f.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)