Student travelling around Spain didn't go for trials (8)
I believe the answer is:
untested
'didn't go for trials' is the definition.
I can't judge whether this defines the answer.
'student travelling around spain' is the wordplay.
'travelling' indicates anagramming the letters.
'around' indicates putting letters inside.
'spain' becomes 'e' (abbreviation for Espana).
'student' with letters rearranged gives 'untsted'.
'untsted' enclosing 'e' is 'UNTESTED'.
Can you help me to learn more?
(Other definitions for untested that I've seen before include "Not checked" , "Not tried or put to proof" , "Not yet tried" , "learner driver" , "not entered for examination" .)