Charlie's vacuum cleaner? (6)
I believe the answer is:
sucker
This clue is a double definition.
'charlie's' is the first definition.
(both can mean a fool)
'vacuum cleaner?' is the second definition.
(device which cleans by sucking)
(Other definitions for sucker that I've seen before include "Shoot from plant roots or informal victim" , "Underground shoot from shrub, or slang victim" , "Slangy victim or sort of adherent" , "Slangily, one who is easily deceived" , "I was taken" .)