LSJ
Adv., (< κίων) like a pillar, γράφειν κ., i.e. in verticallines from top to bottom, Sch. D.T. pp. 183, 191 H.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
[ῑ], nach Säulenart, γράφεται, B.A. p. 787.24.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)