clamp / bind
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to be in a bind
To be in a difficult, unpleasant, or embarrassing situation that is hard to get out of.
Ich habe meinen Geldbeutel vergessen und stecke jetzt ohne Fahrkarte in der Klemme.
I forgot my wallet and now I'm in a bind without a ticket.
clamp / terminal
A device for clamping, holding, or connecting objects, e.g. a screw clamp, a clothes peg, or an electrical terminal.
Verbinden Sie das rote Kabel mit der positiven Klemme der Batterie.
Connect the red cable to the positive terminal of the battery.
'Die Klemme' belongs to the verb 'klemmen' (to jam, to pinch, to be stuck). Both the technical device (m02) and the difficult situation (m01) derive from this idea of being stuck or caught.
Die Schublade klemmt schon wieder.
The drawer is jammed again.
The figurative meaning is used almost exclusively in the fixed expressions 'in der Klemme stecken' (to be in a bind) or 'in der Klemme sitzen' (to be in a bind). You can also say that you help someone 'aus der Klemme' (out of a bind).
Er hat sein ganzes Geld verloren und steckt jetzt tief in der Klemme.
He lost all his money and is now in a serious bind.
You can recognize the idiomatic meaning by the fixed structure 'in der Klemme + verb'. The technical meaning is often specified by adjectives, e.g. 'elektrische Klemme' (electrical terminal), or as part of a compound word, e.g. 'Schraubklemme' (screw clamp).
Wegen des Streiks saßen hunderte Reisende am Bahnhof in der Klemme.
Because of the strike, hundreds of travelers at the station were in a bind.
In the technical sense, 'Klemme' is often used with verbs like 'anschließen' (to connect), 'befestigen' (to fasten), or 'lösen' (to loosen/disconnect). Common compounds are 'Batterieklemme' (battery terminal), 'Schraubklemme' (screw clamp), or 'Lüsterklemme' (terminal block, for electrical cables).
Du musst das schwarze Kabel an der negativen Klemme anschließen.
You have to connect the black cable to the negative terminal.
pole
The Pol is the positive or negative connection of a battery. The Klemme is the part that holds something in place or establishes a connection and can be attached to the Pol. Use Pol for the battery connection itself and Klemme for the attached contact part.
Die rote Klemme hält das Kabel fest am Batterieanschluss.
The red clamp holds the cable firmly to the battery terminal.
Das rote Kabel wird mit dem positiven Pol der Batterie verbunden.
The red cable is connected to the positive terminal of the battery.
