LSJ
ὁ, earthquake, Hsch., Eust. 890.38; — also γακινίας, ὁ, Hsch., and γάκινος, ὁ, Att. acc. to EM 219.41.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
ὁ, Eust. Erderschütterung.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)