A burning issue (4)
'a burning issue?' is the definition.
(I've seen this in another clue)
'a burning issue?' is the wordplay.
'burning issue?' becomes 'sh' (I can't explain this - if you can you should believe this answer much more).
'a'+'sh'='ASH'
Can you help me to learn more?
(Other definitions for ash that I've seen before include "Runic letter; tree" , "Burnt material; tree" , "What's often left after something 1 Ac" , "Powdery residue from fire or cigarette" , "Common tree" .)
'a burning issue' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
This is all the clue.
Can you help me to learn more?
(Other definitions for lava that I've seen before include "Discharge from volcano" , "Flowing volcanic matter" , "Emanating magma" , "Volcanic flowing substance" , "Stuff heatedly hurled out" .)