Instructed to include ultimately rough sandbank in triplicate? (9)
I believe the answer is:
threefold
'triplicate?' is the definition.
(thesaurus)
'instructed to include ultimately rough sandbank' is the wordplay.
'instructed' becomes 'told' (I've seen this before).
'to include' indicates putting letters inside.
'ultimately rough' becomes 'h' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sandbank' becomes 'reef' (I've seen this before).
'h'+'reef'='hreef'
'told' placed around 'hreef' is 'THREEFOLD'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for threefold that I've seen before include "in several parts" , "Triple" .)