Cardiac conduit (6)
I believe the answer is:
artery
(Other definitions for artery that I've seen before include "main course" , "bloody path" , "main line" , "Main traffic route" , "vital route" .)
I believe the answer is:
artery
(Other definitions for artery that I've seen before include "main course" , "bloody path" , "main line" , "Main traffic route" , "vital route" .)