Star after time with friends abroad makes waves (8)
I believe the answer is:
tsunamis
'waves' is the definition.
(I know this)
'star after time with friends abroad' is the wordplay.
'star' becomes 'sun' (the Sun is a star).
'after' means one lot of letters go next to another.
'time' becomes 't' (abbreviation).
'with' means one lot of letters go next to another.
'friends abroad' becomes 'amis' (I've seen this in another clue).
'sun' put after 't' is 'tsun'.
'tsun'+'amis'='TSUNAMIS'
'makes' acts as a link.
(Other definitions for tsunamis that I've seen before include "Huge destructive waves" , "catastrophes" , "Large ocean waves caused by underwater earthquakes" , "Destructive sea waves" , "Violent sea waves" .)