Small journo with extremely large tie (7)
I believe the answer is:
shackle
'tie' is the definition.
(thesaurus)
'small journo with extremely large' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'journo' becomes 'hack' (I've seen this before).
'with' says to put letters next to each other.
'extremely' says to hollow out the word (remove centre letters).
'large' with its middle taken out is 'le'.
's'+'hack'+'le'='SHACKLE'
(Other definitions for shackle that I've seen before include "Manacle" , "Chain, restrain" , "Pair of fetters" , "Fetter, hamper" , "Hobble" .)