Watery humour found in some thoracic hormone (5)
I believe the answer is:
ichor
'watery humour' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'in some thoracic hormone' is the wordplay.
'in' indicates a hidden word.
'ICHOR' is hidden in the letters of 'some thoracic hormone'.
'found' is the link.
Can you help me to learn more?
(Other definitions for ichor that I've seen before include "divine stuff" , "Blood of the ancient gods" , "bloody stuff" , "Fluid in veins of ancient gods" , "flows divinely" .)