Crude description of our world? (6)
I believe the answer is:
earthy
This clue is a double definition.
'crude' is the first definition.
(both can mean vulgar)
'description of our world?' is the second definition.
(relating to Earth)
(Other definitions for earthy that I've seen before include "Suggestive of soil" , "Task involving short journey" , "Head covering" , "Lusty, crude" , "grubby" .)