Read an involved letter that stimulates (10)
I believe the answer is:
adrenaline
'read an involved letter that stimulates' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'read an involved letter' is the wordplay.
'involved' indicates anagramming the letters (involved can mean confusing or complex).
'letter' becomes 'line' (to drop someone a line is to write them a letter).
'read'+'an'='readan'
'readan' anagrammed gives 'adrena'.
'adrena'+'line'='ADRENALINE'
Can you help me to learn more?
(Other definitions for adrenaline that I've seen before include "Hormone replacement" , "Stimulating hormone" , "It stimulates" .)
