One getting ready item of furniture (7)
I believe the answer is:
dresser
This clue is a triple definition!
'one getting ready' is the first definition.
(someone getting dressed)
'item' is the second definition.
(I have seen 'Item of furniture' mean 'dresser' so perhaps 'item' could also mean 'dresser')
'of' acts as a link.
'furniture' is the third definition.
(I know that dresser is a type of furniture)
(Other definitions for dresser that I've seen before include "One who treats wounds" , "helps actor get ready" , "Chest of drawers" , "One putting things on" , "Person working in one theatre" .)