Pastel caught on material (6)
I believe the answer is:
crayon
'pastel' is the definition.
(thesaurus)
'caught on material' is the wordplay.
I cannot quite understand how this works, but
'caught' could be 'c' (cricket abbreviation) and 'c' is present in the answer.
'on' is present in the answer.
The remaining letters 'ray' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for crayon that I've seen before include "Colouring pencil" , "Writer" , "Wax pen" , "Drawing-stick" , "Coloured wax pencil" .)