Cat losing head on European peak (5)

I believe the answer is:

eiger

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'cat losing head on european peak' is the definition.
The definition suggests a singular noun which matches the answer.

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(Other definitions for eiger that I've seen before include "Mountain in the Alps" , "Mountains in Bernese Alps" , "Keen" , "North wall mountain" , "Alpine mountain" .)

I've seen this clue in The Times.

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