Definition of naval brass in English:

naval brass

Pronunciation /ˌneɪvl ˈbrɑːs/ /ˌneɪvl ˈbras/

noun

  • A type of brass containing about 60 per cent copper, 39 per cent zinc, and one per cent tin, used for bolts and other fittings on ships.

Origin

Mid 18th century (in an earlier sense). From naval + brass.