λιβρός
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)
ά, όν,
A = σκοτεινὸς καὶ μέλας, Hp. ap. Erot. (prob. referring to Aër.15 where διερῷ and θολερῷ codd. Hp., as epith. of ἠήρ) ; νύξ expld. as either dark or (cf. λιβάς) dewy night, EM564.49; λιβρὸν σέλας Trag.Adesp.232; ὀλὸς λ. either black or dripping blood, AP 15.25.1 (Besant.); cf. λιμβρός.