Crossword Genius

Opens up at sunset to the sailors (8)

Ross

I believe the answer is:

unscrews

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'opens up at sunset' is the definition.
The answer and definition can be both to do with contact as well as being verbs in their -s form.
Maybe there's an association between them I don't understand?

'the sailors' is the wordplay.
I cannot quite see how this works, but
'sailors' could be 'crew' (as in a ship's crew) and 'crew' is located in the answer.
This explanation may well be incorrect...

'to' acts as a link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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