Old man stifles fire discovered in shopping centre (5)
I believe the answer is:
plaza
'shopping centre' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for plaza that I've seen before include "Open square in Spain" , "open space" , "The ____ Mayor is important in Madrid" , "Public square or market" , "Public square, as in Spanish town" .)