ὑπερκύπτω · hyperkyptō — LSJ
pop oneʼs head up, bob up, peep over, Hom. Epigr. 14.22, J. AJ 12.7.4; ἐπὶ δένδρεόν τι ἀμβὰς ὑπερέκυπτε εἰς τὸ ἄβατον IG 42(1).121.91 (Epid., iv B. C.); ὑπερκύψας . . κατεῖδον Pl. Euthd. 271a; (the cake) ὑπερέκυπτε τοῦ κανοῦ Nicostr.Com. 15; τοῦ στομίον Luc. Luct. 16; ἀνανήξασθαι καὶ ὑπερκῦψαι (sc. κλύδωνος) Ph. 1.210, cf. 2.85; of water-plants, τοῦ ὕδατος Dsc. 4.100, cf. 113; of a muscle, emerge, come to the surface, Gal. UP 11.3, 5; ὑπερκύπτει τις [τῶν φρενῶν] μοῖρα πρὸς ὑποχόνδριον οἷν χάραξ
command a view of, σκοπιάν, ἢ ὑπερκύπτει τὸν οὐρανόν Them. Or. 23.293b.
put oneʼs head over, c. acc., ταῦρον . . μέγαν, ὃς ὑπερκύψας τὸ Ταΰγετον ἀπὸ τοῦ Εὐρώτα πίεται Plu. Lyc. 15; ὅταν ὑπερκύψῃ (sc. ἡ φλὲψ) τὸν ἀμνειόν when it passes the inner membrane, Gal. 5.555: metaph., overtop, transcend, πολλῶν ὄλβον AP 6.250 (Antiphil.); θεὸς ὑ. τὰς δυνάμεις ἑαυτοῦ Ph. 1.173.