tunnel
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tunnel
An underground, often tube-shaped passage built for trains, cars, or pedestrians to pass under obstacles such as mountains or bodies of water.
Der Zug fährt jetzt in den längsten Tunnel der Strecke ein.
The train is now entering the longest tunnel on the route.
tunnel
Colloquially, a state of extreme concentration in which you barely notice your surroundings.
Beim Schreiben des Romans war ich oft wie in einem Tunnel und habe die Zeit vergessen.
While writing the novel, I was often as if in a tunnel and lost track of time.
nutmeg
In sports, especially soccer, playing the ball through the open legs of an opposing player.
Der Stürmer demütigte den Verteidiger mit einem frechen Tunnel.
The striker humiliated the defender with a cheeky nutmeg.
The preposition changes depending on what you want to express. You drive 'in den Tunnel' (into the tunnel, accusative), 'durch den Tunnel' (all the way through the tunnel, accusative), or you are 'im Tunnel' (in the tunnel, position, dative).
Fahr vorsichtig in den Tunnel, es ist dort sehr dunkel.
Drive carefully into the tunnel; it's very dark there.
The expression 'im Tunnel sein' or 'wie in einem Tunnel sein' means that you are extremely focused and no longer notice your surroundings.
Wenn ich programmiere, bin ich oft stundenlang wie in einem Tunnel.
When I program, I'm often in a tunnel for hours.
This meaning of 'Tunnel' (nutmeg) is specialist language from sports, especially soccer. There is also the corresponding verb 'tunneln' (to nutmeg), which means to play the ball through an opponent's legs.
Der Stürmer hat den Verteidiger getunnelt und dann das Tor geschossen.
The striker nutmegged the defender and then scored the goal.
stollen / tunnel / cleat
A tunnel and a Stollen are underground passages. A tunnel is built as a transportation route to pass under an obstacle such as a mountain. A Stollen, on the other hand, is part of a mine and is used mainly for extracting or transporting raw materials.
Die neue Straße führt durch einen Tunnel unter dem Berg hindurch.
The new road passes through a tunnel under the mountain.
Die Bergleute transportieren das Erz durch einen Stollen aus dem Berg.
The miners transport the ore out of the mountain through a mine tunnel.
