Memorial to one's death throes (9)
I believe the answer is:
headstone
'memorial' is the definition.
(I know that headstone is a type of memorial)
'one's death throes' is the wordplay.
'one's death' anagrams to 'HEADSTONE'.
Though, I am not sure how this is indicated.
'to' is the link.
Can you help me to learn more?
(Other definitions for headstone that I've seen before include "Grave marker" , "Graveyard slab" , "It marks a grave" , "Its stands over a grave, duly inscribed" , "It is set up on a grave with inscriptions" .)