Noun
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.
Source: Webster's dictionaryA source of moving air, such as a fan or bellows, introduces additional air into the fire through the tuyere. Source: Internet
The major variation from the forge and fire just described is a 'back draft' where there is no fire pot, and the tuyere enters the hearth horizontally from the back wall. Source: Internet
The tuyere will enter the firepot at the bottom. Source: Internet