Linked thing about one English paper's leader (9)
I believe the answer is:
chieftain
'linked thing' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'about one english paper's leader' is the wordplay.
'about' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'english' becomes 'E' (abbreviation as in OED).
'paper' becomes 'FT' (the Financial Times newspaper).
'leader' becomes 'chain' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'i'+'e'+'ft'='ieft'
'ieft' going inside 'chain' is 'CHIEFTAIN'.
Can you help me to learn more?
(Other definitions for chieftain that I've seen before include "Head of a clan" , "Clan leader" , "Tribe's leader" , "Tribal chief" , "Head of tribe" .)