κουρεύομαι
From LSJ
Νέος ἂν πονήσῃς, γῆρας ἕξεις εὐθαλές → Iuvenis labora: senium habebis floridum → Wenn jung du schuftest, wird dein Alter blühend sein
English (LSJ)
(κουρά) A take the tonsure, i.e. enter a monastery, of a nun, Just.Nov.134.10.1; have the hair cut, of four-year-old children, Sch.Nic.Al.417.