Articles claiming drink leads to heartache (6)
I believe the answer is:
angina
'heartache' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'articles claiming drink' is the wordplay.
'articles' becomes 'ana' ('an' and 'a', English indefinite articles).
'claiming' indicates putting letters inside.
'drink' becomes 'gin' (gin is a kind of drink).
'ana' going around 'gin' is 'ANGINA'.
'leads to' is the link.
Can you help me to learn more?
(Other definitions for angina that I've seen before include "Nag Ian about his disease" , "Pain from diseased heart" , "Painful heart complaint." , "Painful heart condition" , "Heart ailment" .)