κουρεύομαι
From LSJ
Ἢ μὴ γάμει τὸ σύνολον ἢ γαμῶν κράτει → Aut caelebs vive aut dominus uxori tuae → Bleib ledig oder herrsche über deine Frau
English (LSJ)
(κουρά) 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.