They use rum and sleep (4-3)
I believe the answer is:
shut-eye
'sleep' is the definition.
(I know that shut-eye is a type of sleep)
'they use rum' is the wordplay.
'rum' indicates anagramming the letters (rum can mean strange or unusual).
'they'+'use'='theyuse'
'theyuse' anagrammed gives 'SHUT-EYE'.
'and' acts as a link.
(Another definition for shut-eye that I've seen is " Sleep".)
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