tüˈye(ə)r, twēˈ-, ˈtwi(ə)r noun
( -s )
Etymology: French tuyère, from Middle French tuyere, from tuyau pipe, from Old French tuel, tuyau — more at tewel
: a nozzle through which an air blast is delivered to a forge or blast furnace ; also : a port or vent between tiered grate sections of a boiler furnace