Big blaze in plant close to Waterloo (7)
I believe the answer is:
inferno
'big blaze' is the definition.
'inferno' can be an answer for 'blaze' (I've seen this before). I am unsure of the 'big' bit.
'in plant close to waterloo' is the wordplay.
'plant' becomes 'fern' (fern is a kind of plant).
'close to' says to take the final letters (the close/ending of).
The final letter of 'waterloo' is 'o'.
'in'+'fern'+'o'='INFERNO'
Can you help me to learn more?
(Other definitions for inferno that I've seen before include "Dante's Hell" , "Large dangerous fire" , "hot spot" , "Where Satan lives and sinners go" , "A raging fire as in hell - ask Dante" .)