ὑπηρέσιον
From LSJ
διὸ καὶ μεταλάττουσι τὴν φυσικὴν χρῆσιν εἰς τὴν παρὰ φύσιν αἱ δοκοῦσαι παρθένοι τῶν εἰδώλων → therefore those professing to be virgins of the idols even change the natural use into the unnatural (Origen, commentary on Romans 1:26)
English (LSJ)
τό,
A cushion on a rower's bench, Th.2.93, Isoc.8.48, PCair.Zen.54.44 (iii B. C.); εἰς ὑ. καὶ κώπην, i.e. to rowers' service, Plu.Them.4. 2 riding-pad or saddle-cloth, D.S.20.4. II rowers' pay, AB312, Phot. III = ὑπηρετικὸν πλοῖον, Eratosth. ap.Str.2.1.23.