Huge mines exploded around me (7)
I believe the answer is:
immense
'huge' is the definition.
('immense' can be a synonym of 'huge')
'mines exploded around me' is the wordplay.
'exploded' indicates an anagram.
'around' is an insertion indicator.
'mines' with letters rearranged gives 'imnse'.
'imnse' placed around 'me' is 'IMMENSE'.
(Other definitions for immense that I've seen before include "Very good" , "Exceedingly large" , "Huge, really great" , "Extremely large or great" , "Unusually large or great" .)