Monkey in pair vacated room for parasitic creature (8)
I believe the answer is:
tapeworm
'parasitic creature' is the definition.
'tapeworm' can be an answer for 'creature' (tapeworm is a kind of creature). I'm unsure of the 'parasitic' bit.
'monkey in pair vacated room' is the wordplay.
'monkey' becomes 'ape' (I've seen this before).
'in' is an insertion indicator.
'pair' becomes 'two' (I've seen this before).
'vacated' means to remove the middle letters.
'room' with its centre removed is 'rm'.
'ape' going inside 'two' is 'tapewo'.
'tapewo'+'rm'='TAPEWORM'
'for' is the link.
Can you help me to learn more?
(Other definitions for tapeworm that I've seen before include "Sucker" , "Intestinal parasite" , "Ribbon-like parasite inhabiting the gut" , "Internal parasite" , "Human parasite" .)