Root shown in puzzles we designed (5)
I believe the answer is:
swede
'root' is the definition.
(I know that swede is a type of turnip)
'in puzzles we designed' is the wordplay.
'in' indicates a hidden word.
'SWEDE' is hidden within 'puzzles we designed'.
'shown' is the link.
(Other definitions for swede that I've seen before include "Large root vegetable" , "A turnip, or a Scandinavian" , "Person like Strindberg" , "Someone from Gothenburg" , "Scandinavian; root veg." .)