Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive. It is hard and brittle, and it was particularly significant in antiquity, so much so that the Bronze Age was named after the metal. However, since 'bronze' is a somewhat imprecise term, and historical pieces have variable compositions, in particular with an unclear boundary with brass, modern museum and scholarly descriptions of older objects increasingly use the more cautious and inclusive term 'copper alloy' instead. Historically the term latten was used for such alloys. The word bronze is borrowed from French: bronze, itself borrowed from Italian: bronzo (compare Medieval Latin: bronzium), whose origin is unclear. It might be connected with Venetian: bronza 'glowing coals', or German: Brunst 'fire', but it could equally go back to, or be influenced by, the Latin name Brundisium of the city of Brindisi (aes Brundusinum, meaning 'copper of Brindisi', is attested in Pliny).