Terminal heartbreak (5)
I believe the answer is:
earth
This could be a double definition.
'terminal' is the first definition.
(I've seen this before)
'heartbreak' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
Can you help me to learn more?
(Other definitions for earth that I've seen before include "wire" , "our home" , "Solid ground" , "Heart (anag)" , "costs so much?" .)