Fusion energy source (3)
I believe the answer is:
sun
(Other definitions for sun that I've seen before include "Nice weather" , "British publication" , "Warmer" , "Centre of a solar system" , "Bask" .)
I believe the answer is:
sun
(Other definitions for sun that I've seen before include "Nice weather" , "British publication" , "Warmer" , "Centre of a solar system" , "Bask" .)