Island train did crash (8)
I believe the answer is:
trinidad
'island' is the definition.
(Trinidad is an example)
'train did crash' is the wordplay.
'crash' indicates an anagram.
'train'+'did'='traindid'
'traindid' is an anagram of 'TRINIDAD'.
(Other definitions for trinidad that I've seen before include "... [WI ISLAND]" , "Caribbean island" , "W. I. island" , "Island linked to Tobago" , "Port of Spain island" .)