Arrange to keep a single one of several newborns in litter (9)
I believe the answer is:
palanquin
'litter' is the definition.
(litter carried as a form of transport)
'arrange to keep a single one of several' is the wordplay.
'arrange' becomes 'plan' (I've seen this in another clue).
'to keep' is an insertion indicator.
'a single' becomes 'a'.
'one of several' becomes 'quin' (I've seen this before).
'plan' placed around 'a' is 'palan'.
'palan'+'quin'='PALANQUIN'
'newborns in' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for palanquin that I've seen before include "Box carried on poles" , "Shoulder-borne litter for one person" .)