Bask (3)
'bask' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sun that I've seen before include "Hub of our planetary system" , "Star that provides light and heat for a solar system" , "Star around which the earth travels" , "Our central star" , "Nearest star to Earth" .)
'bask' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for sunbathe that I've seen before include "what holidaymakers may do" , "Catch some rays" , "become brown" , "Expose one's body in hot weather" , "turn brown, naturally" .)