Designed man's suit producing huge waves overseas (8)
I believe the answer is:
tsunamis
'huge waves overseas' is the definition.
I can't tell whether this definition defines the answer.
'designed man's suit' is the wordplay.
'designed' indicates an anagram (designed with the letters).
'mans'+'suit'='manssuit'
'manssuit' is an anagram of 'TSUNAMIS'.
'producing' is the link.
Can you help me to learn more?
(Other definitions for tsunamis that I've seen before include "Destructive sea waves" , "Huge destructive waves" , "Violent sea waves" , "catastrophes" , "Large ocean waves caused by underwater earthquakes" .)