Scheme; map (4)
I believe the answer is:
plan
I believe this is a double definition.
'scheme' is the first definition.
(synonyms)
'map' is the second definition.
(eg the plans for a building)
(Other definitions for plan that I've seen before include "Method laid out for accomplishing something" , "Arrangement" , "Blueprint" , "Scheme to achieve something" , "Scheme, design" .)