Juicer contains something cold (3)
I believe the answer is:
ice
'something cold' is the definition.
'juicer contains' is the wordplay.
'contains' indicates the answer is hidden within the clue.
'ICE' is hidden in the letters of 'juicer'.
(Other definitions for ice that I've seen before include "Winter formation" , "Diamonds (colloq.)" , "Constituent of 2dn" , "Glaciate" , "Some number" .)