One attempting to get a place abroad (5)

I believe the answer is:

trier

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'one attempting' is the definition.
(someone who tries or attempts to do something)

I don't understand how the remainder of the clue works.

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(Other definitions for trier that I've seen before include "one never giving up" , "Determined person" , "one hears" , "One attempts" , "One who refuses to give up -- German city on the Moselle" .)

I've seen this clue in the Evening Standard.

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