Outdoors (10)
(Other definitions for extramural that I've seen before include "Not on course" , "outside the building" , "outside the university" , "outside city walls" , "Off-premises (univ. studies)" .)
'outdoors' is the definition.
(synonyms)
This is all the clue.
(Other definitions for alfresco that I've seen before include "exposed to the fresh air" , "Out of doors" , "out of the house" , "Open-air" , "Meal eaten in the outdoors" .)
'outdoors' is the definition.
(synonyms)
This is all the clue.
(Other definitions for open that I've seen before include "Not shut up or hidden" , "Traditional room heater" , "Frank - ready for business" , "William --, English poet" , "Frank and unconcealed" .)