Mountain rescuer stumped by Tory Jenkin (2,7)
I believe the answer is:
st bernard
'tory jenkin' is the definition.
I can't tell whether this definition defines the answer.
'mountain rescuer stumped by' is the wordplay.
'mountain rescuer' becomes 'bernard' (I can't justify this - if you can you should give a lot more credence to this answer).
'stumped' becomes 'st' (cricket abbreviation).
'by' is a charade indicator (letters next to each other).
'bernard' after 'st' is 'ST BERNARD'.
Can you help me to learn more?
(Other definitions for st bernard that I've seen before include "Large dog trained to rescue Alpine travellers" , "Large breed of dog" , "Dog associated with mountain rescue" , "Large dog trained for Alpine rescues" , "Large dog trained to rescue travellers in the Alps" .)