LSJ
and αἰέλιοι, οἱ, brothers-in-law, whose wives are sisters, Hsch. (αἴλιοι), Eust. 648.45, EM 31.24; cf. εἰλίονες.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
οἱ, Schwäger, deren Frauen Schwestern sind, Hes.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)