ἀσκαρδαμύκτης
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)
ου, ὁ, A one who does not blink, Hp.Epid.2.6.1 (pl.).
Spanish (DGE)
ὁ de mirada fija, que no pestañea Hp.Epid.2.6.1.