Crossword Genius

Principal red route from Isla or Talisker (5)

Ross

I believe the answer is:

aorta

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'principal red route' is the definition.
'aorta' can be an answer for 'route' (I have seen 'Trunk route' mean 'aorta' so perhaps 'route' could also mean 'aorta'). I am not sure about the 'principal red' bit.

'from isla or talisker' is the wordplay.
'from' indicates a hidden word.
'AORTA' is hidden in the letters of 'isla or talisker'.

Can you help me to learn more?

(Other definitions for aorta that I've seen before include "Tube" , "Large artery of the heart" , "main arterial route" , "Vital blood vessel" , "Major blood vessel" .)

I've seen this clue in The Sun.
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