tewel
Tewel (noun) means a vent, chimney or pipe, especially one that leads to a furnace or a set of bellows.
Etymology
Came into English from Middle English tuwel, which developed from Old French tueil, tuel, tudel (“tube, pipe”) (the source too of modern French tuyau), from Vulgar Latin *tūta, from Frankish *thūta (“pipe”), from Proto-Germanic *þeutǭ (“pipe, channel, flow”), itself from *þeutaną (“to howl, roar, resound”), ultimately from Proto-Indo-European *tu-, *tutu- (“bird-cry, shriek”). Compare Spanish and Portuguese tudel, which come from the same Germanic source.