Savings teens wasted on goods (4,3)
I believe the answer is:
nest egg
'savings' is the definition.
('nest egg' can be a synonym of 'savings')
'teens wasted on goods' is the wordplay.
'wasted' indicates an anagram.
'on' means one lot of letters go next to another.
'goods' becomes 'gg' (I've seen this in other clues).
'teens' with letters rearranged gives 'neste'.
'neste'+'gg'='NEST-EGG'
(Other definitions for nest egg that I've seen before include "Rainy day savings" , "Retirement savings" , "a little money?" , "Savings kept in reserve" , "money put away" .)