An intriguing design? (6)
I believe the answer is:
scheme
'design?' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for scheme that I've seen before include "System or strategy" , "Conspire" , "proposal" , "Machination" , "Connive, intrigue" .)