Travelling light? (8,4)
This might be a double definition.
'travelling' is the first definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'light?' is the second definition.
(I know that shooting star is a type of light)
Can you help me to learn more?
(Other definitions for shooting star that I've seen before include "Annie Oakley, for example" , "on which you'd make a wish?" , "Bright meteor" , "possibly a streaker?" , "Top toxophilite" .)
'travelling light?' is the definition.
'travelling light?' is the wordplay.
'travelling' becomes 'sun' (I am not sure about this - if you are sure you should believe this answer much more).
'light?' becomes 'beam' (beam is a kind of light).
'sun'+'beam'='SUNBEAM'
Can you help me to learn more?
(Other definitions for sunbeam that I've seen before include "Bright ray -- bus name (anag)" , "Ray of natural light" , "Bright shaft of daylight" , "Ray of solar light" , "sheds a bit of light" .)