LSJ
εως, ἡ, (< συνηλόω) a being pinned together, by an arrow or lance, Paul.Aeg. 6.88; = conclavatio, Gloss.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
ἡ, das Zusammennageln (?).
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)