1. 
   Tuyere
   A tuyere, also can be spelled as tuyère, is a tube, nozzle or pipe through which air is blown into a furnace or hearth. Air or oxygen is injected into a hearth under pressure from bellows or a blast engine or other devices. This causes the fire to be hotter in front of the blast than it would othe...
   Found op http://en.wikipedia.org/wiki/Tuyere
   
   
2. 
   Tuyere
   • (n.) A nozzle, mouthpiece, or fixture through which the blast is delivered to the interior of a blast furnace, or to the fire of a forge.
   Found op http://thinkexist.com/dictionary/meaning/tuyere/
   
   
3. 
   tuyere
   (from the article `blast furnace`) ...has been preheated to temperatures from 900° to 1,250° C (1,650° and 2,300° F), together with injected fuel such as oil or natural gas, is blown ... ...figure). At the bottom is a parallel-sided hearth where liquid metal and slag collect, and this is surmoun...
   Found op http://www.britannica.com/eb/a-z/t/96
   
   
4. 
   Tuyere
   A tuyere is a terminal of a pipe through which air is supplied to a furnace. It is usually in the shape of a truncated cone, with the smaller end euntering the furnace. Because tuyeres get very hot, and were traditionally made of cast iron, special provision had to be made to prevent it from being b...
   Found op http://www.probertencyclopaedia.com/browse/GT.HTM
   
   

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