Major blood vessel (5)
'major blood vessel' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aorta that I've seen before include "Main human artery" , "Large blood-vessel" , "Large trunk artery" , "Large artery of the heart" , "Main artery from heart" .)
'major blood vessel' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for artery that I've seen before include "Principle channel of circulatory system" , "Something that could be clogged" , "Felt amazement" , "Major traffic route" , "Vital tube" .)