Not play it by ear (4)
I believe the answer is:
plan
(Other definitions for plan that I've seen before include "Scheme - map" , "Diagram; design" , "Design; map" , "Layout drawing" , "Scheme, design" .)
I believe the answer is:
plan
(Other definitions for plan that I've seen before include "Scheme - map" , "Diagram; design" , "Design; map" , "Layout drawing" , "Scheme, design" .)