regoPronunciation: /ˈrɛdʒəʊ/ (also reggo)Definition of rego noun (plural regos) Australian/NZ informal 1a motor-vehicle registration:no rego, one headlamp, baldy tyres 2 [mass noun] the action of registering, especially for an activity; registration:footy rego dayOrigin: 1960s: abbreviation of registration + the colloquial suffix -o
