Stand for Paddington, say (4)
I believe the answer is:
bear
I believe this is a double definition.
'stand for' is the first definition.
(thesaurus)
'paddington say' is the second definition.
(fictional character Paddington Bear)
(Other definitions for bear that I've seen before include "Put up with - beast!" , "Harbour - transport" , "Give birth to - large mammal" , "eg Paddington or Yogi" , "Carry - tolerate" .)