Crossword Genius

Cop outside lands in trouble: time to go inside (4,4)

Ross

I believe the answer is:

cold snap

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'time to go inside' is the definition.
I can't tell whether this definition defines the answer.

'cop outside lands in trouble' is the wordplay.
'outside' indicates putting letters inside.
'in trouble' indicates an anagram.
'lands' is an anagram of 'ldsna'.
'cop' going around 'ldsna' is 'COLD SNAP'.

Can you help me to learn more?

(Other definitions for cold snap that I've seen before include "Spell when it isn't like 8" , "Sudden chilly period" , "Period of chilly weather" , "Short wintry spell" , "Sudden short spell of bitter weather" .)

I've seen this clue in The Sun.
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