ἴλιγγος
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, (ἴλλω, εἴλω)
A spinning round; esp. swimming in the head, Hp.Aph. 3.17(pl.), Pl.R.407c (pl.); σκοτοδινίαν ἴλιγγόν τε ἐμποιεῖν τινι Id.Lg. 892e; also, disturbance of the bowels, Nic.Al.597. 2 in pl., eddies or wreaths of smoke, A.R.4.142. 3 whirlpool, Procop.Goth.4.6. 4 agitation of mind, Plu.2.1068c:—also written εἴλιγγος, A.R. l.c., Nic. l.c., Plu.Caes.60, and codd. Pl.