μεσοστύλιον
From LSJ
μὴ ἐν πολλοῖς ὀλίγα λέγε, ἀλλ΄ ἐν ὀλίγοις πολλά → don't say little in many words, but much in a few words (Stobaeus quoting Pythagoras)
English (LSJ)
[ῡ], τό, A space between columns, IG5(2).123 (Tegea, pl.), Agatharch.102 (pl.):—also μεσό-στῡλον, τό, Sch.Od.19.37, Hsch.s.v. μεσόδμαι, Cod.Just.1.4.26.8.
German (Pape)
[Seite 140] τό, der Zwischenraum zwischen zwei Säulen, intercolumnium, auch μεσαστύλιον, vgl. Lob. zu Phryn. 195.