χήνημα
From LSJ
τίς γὰρ ἁδονᾶς ἄτερ θνατῶν βίος ποθεινὸς ἢ ποία τυραννίς; τᾶς ἄτερ οὐδὲ θεῶν ζηλωτὸς αἰών → What human life is desirable without pleasure, or what lordly power? Without it not even the life of the gods is enviable.
English (LSJ)
ατος, τό,
A wide gape, mocking laugh, Hsch.; also aor. χηνῆσαι· καταμωκήσασθαι, from χηνάω or -έω.