Tailored man's suit produced huge waves (8)
I believe the answer is:
tsunamis
'huge waves' is the definition.
(I've seen this before)
'tailored man's suit' is the wordplay.
'tailored' indicates an anagram (the letters are customised ).
'mans'+'suit'='manssuit'
'manssuit' anagrammed gives 'TSUNAMIS'.
'produced' acts as a link.
(Other definitions for tsunamis that I've seen before include "Violent sea waves" , "catastrophes" , "Destructive sea waves" , "Large ocean waves caused by underwater earthquakes" , "Huge destructive waves" .)