/twee yair", tooh-, twear/ ; Fr. /tyuu yerdd"/ , n. , pl. tuyères /twee yairz", tooh-, twearz/ ; Fr. /tyuu yerdd"/ . Metall.
an opening through which the blast of air enters a blast furnace, cupola, forge, or the like, to facilitate combustion.
Also, tuyer /twee yair", tooh-, twear/ . See diag. under blast furnace .
[ 1665-75; tuyau pipe ]