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Hasil cari dari kata atau frase: Tunnel shaft (0.00994 detik)
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Definition: Tunnel shaft
, n. [F. tonnelle a semicircular, wagon-headed
vault, a tunnel net, an arbor, OF. also tonnel; dim. of tonne
a tun; -- so named from its resemblance to a tun in shape.
1. A vessel with a broad mouth at one end, a pipe or tube at
the other, for conveying liquor, fluids, etc., into casks,
bottles, or other vessels; a funnel.
2. The opening of a chimney for the passage of smoke; a flue;
And one great chimney, whose long tunnel thence
The smoke forth threw. --Spenser.
3. An artificial passage or archway for conducting canals or
railroads under elevated ground, for the formation of
roads under rivers or canals, and the construction of
sewers, drains, and the like.
4. (Mining) A level passage driven across the measures, or at
right angles to veins which it is desired to reach; --
distinguished from the drift, or gangway, which is led
along the vein when reached by the tunnel.
(Metal.), the top of a smelting furnace where
the materials are put in.
, a limekiln in which coal is burned, as
distinguished from a flame kiln, in which wood or peat is
, a net with a wide mouth at one end and narrow
at the other.
, Tunnel shaft
, a pit or shaft sunk from the
top of the ground to the level of a tunnel, for drawing up
the earth and stones, for ventilation, lighting, and the