Some pretty ingenious binding (5)
I believe the answer is:
tying
'binding' is the definition.
('tie' can be a synonym of 'bind')
'some pretty ingenious' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'TYING' is hidden in the letters of 'pretty ingenious'.
(Other definitions for tying that I've seen before include "lacing" , "Restricting" , "Scoring the same" , "restrictive" , "Binding, fastening" .)