Wood-workers drop fishes and go in (5)

I believe the answer is:

enter

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'go in' is the definition.
(synonyms)

I can't explain the rest of the clue.

(Other definitions for enter that I've seen before include "Come/go in" , "Go in - set down" , "Gain access to" , "Record - stage direction - come in" , "put in for a race" .)

I've seen this clue in The Hindu.

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