i Register
In some senses, nrb is marked as slang, UK. Watch for register when choosing this word.
noun
Initialism of nonreturnable bottle.
Initialism of non-rebreather mask.
Initialism of nil-rate band.
Initialism of non-resident Bangladeshi.
Initialism of no reason boner.
name
The station code of Norbury railway station in England.
Initialism of Nepal Rastra Bank.
Initialism of National Religious Broadcasters.