Crossword Genius

Entrance fee ending protest (5)

Ross

I believe the answer is:

gripe

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'protest' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

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(Other definitions for gripe that I've seen before include "Grievance" , "Trivial complaint" , "Grumble (colloq.)" , "Complain; colic (water)" , "Grumble informally" .)

I've seen this clue in The Daily Express.
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