New one, perhaps, needs backing of the others (6)
I believe the answer is:
forest
'new one' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'needs backing of the others' is the wordplay.
'needs backing' says the letters should be written in reverse (I've seen 'needing backing' mean this).
'the others' becomes 'rest' (eg the rest of a group).
'of' backwards is 'fo'.
'fo'+'rest'='FOREST'
'perhaps' is the link.
Can you help me to learn more?
(Other definitions for forest that I've seen before include "that has branches everywhere" , "Grow more rigid" , "green area" , "New, Epping or Sherwood" , "Large area of trees and undergrowth" .)