τριτεύω
From LSJ
θοἰμάτιον οὐκ ἀπολώλεκ', ἀλλὰ καταπεφρόντικα → I haven't lost my himation; I've pledged it to Thought | I have not lost my himation, but I've thought it away | I have not lost my himation, but I spent it in the schools
English (LSJ)
A hold the office of τριτευτής, CIG3491, IGRom.4.1244 (both Thyatira), 414 (Pergam.); dub. sens. in PStrassb. 114.6 (ii B. C.).