braze

verb

1. (transitive)To cover with brass, or as with brass.
2. To join two metal pieces, without melting them, using heat and diffusion of a jointing alloy of capillary thickness.
3. (obsolete)To burn or temper in fire.

noun

1. A kind of small charcoal used for roasting ore.

   “Roasting the ores is done with the charcoal braze (or fine charcoal from the charring) in heaps of thirty feet width, fifty-feet length and twenty feet height, containing 3,200 tons.”