Appliance tagged incorrectly (6)
I believe the answer is:
gadget
'appliance' is the definition.
(I know that appliance can be written as gadget)
'tagged incorrectly' is the wordplay.
'incorrectly' indicates anagramming the letters (I've seen this in other clues).
'tagged' is an anagram of 'GADGET'.
(Other definitions for gadget that I've seen before include "Nifty device" , "Small ingenious device" , "Gismo" , "Small mechanical device or tool" , "appliance" .)