πεντηκόντερος
From LSJ
Σκηνὴ πᾶς ὁ βίος καὶ παίγνιον: ἢ μάθε παίζειν, τὴν σπουδὴν μεταθείς, ἢ φέρε τὰς ὀδύνας → All life is a stage and a play: either learn to play laying your gravity aside, or bear with life's pains.
English (LSJ)
(sc. ναῦς), ἡ,
A ship with fifty oars, Pi.P. 4.245, IG12.23, Hdt.1.152, al., Th.1.14 ; πεντηκόντ-ορος is v.l. in Pi. l. c., Hdt. 6.138, Th. l. c., and is found in E.IT 1124 (lyr.), Marm.Par. 15.