Crossword Genius

Carpenter is to go in without fish (5)

Ross

I believe the answer is:

enter

I'm a little stuck... Click here to teach me more about this clue!

'fish' is the definition.
The answer and definition can be both related to competing as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?

'carpenter is to go in without' is the wordplay.
'ENTER' is hidden within the letters.
But, I am not sure how this is indicated.

Can you help me to learn more?

(Other definitions for enter that I've seen before include "Come or go in" , "Get in" , "put in for a race" , "A key on the right" , "Record (in a log)" .)

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