Κειτούκειτος
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
English (LSJ)
ὁ, comic name of a Gramm., who asked respecting every dish—κεῖται ἢ οὐ κεῖται; (cf. κεῖμαι v.5) Ath.1.1e.
Greek (Liddell-Scott)
Κειτούκειτος: ὁ, κωμικὸν ὄνομα τοῦ Γραμματικοῦ Οὐλπιανοῦ, ὅστις νόμον εἶχε μηδενὸς φαγητοῦ ἀποτρώγειν πρὶν ἐρωτῆσαι·‒ κεῖται ἢ οὐ κεῖται; (πρβλ. κεῖμαι V. 7), Ἀθήν. 1Ε.