What Jupiter and Saturn are made of (3)
I believe the answer is:
gas
(Other definitions for gas that I've seen before include "Americans' petrol" , "THIRD PART OF 23" , "Oxygen is one" , "Something exciting" , "16 (US)" .)
I believe the answer is:
gas
(Other definitions for gas that I've seen before include "Americans' petrol" , "THIRD PART OF 23" , "Oxygen is one" , "Something exciting" , "16 (US)" .)