Child stars travelling economy (5,5)
I believe the answer is:
third class
'economy' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'child stars travelling' is the wordplay.
'travelling' indicates anagramming the letters.
'child'+'stars'='childstars'
'childstars' with letters rearranged gives 'THIRD-CLASS'.
Can you help me to learn more?
(Other definitions for third class that I've seen before include "Grade C" , "very poor" , "Low grade" , "kind of degree" , "modest level" .)