1. NSWR - Noun
2. NSWR - Proper noun
NSWR
(Australia, rail transport) Abbreviation of New South Wales Government Railways.
NSWR (plural NSWRs)
(nuclear engineering) Abbreviation of nuclear salt-water rocket.
However, if the use of NSWR began to rise, it would be possible to replace this with the cheaper isotopes 233 U or 239 Pu in either fission breeder reactors or (much better) fusion/fission hybrid reactors. Source: Internet