καλαμεία
From LSJ
Πρόσεχε τῷ ὑποκειμένῳ ἢ τῇ ἐνεργείᾳ ἢ τῷ δόγματι ἢ τῷ σημαινομένῳ. → Look to the essence of a thing, whether it be a point of doctrine, of practice, or of interpretation.
English (LSJ)
ἡ, A reeds, in a collective sense, PTeb.5.199 (ii B.C.); crop of reeds (in form κᾰλᾰμ-μία), PLond.2.163.22 (i A.D.). 2 (sc. γῆ) reed-land, PTeb.457 (ii A.D.).