Like a coconut's shell (4)
I believe the answer is:
hard
(Other definitions for hard that I've seen before include "to be listened to in Scotland" , "Solid; difficult" , "Difficult; rigid" , "Complicated" , "Unyielding" .)
I believe the answer is:
hard
(Other definitions for hard that I've seen before include "to be listened to in Scotland" , "Solid; difficult" , "Difficult; rigid" , "Complicated" , "Unyielding" .)