Blood channel
I believe the answer is:
vein
(Other definitions for vein that I've seen before include "Vessel carrying blood towards the heart" , "part of a vital system" , "Speaker's useless" , "Blood-carrying vessel" , "Blood-vessel" .)
I believe the answer is:
vein
(Other definitions for vein that I've seen before include "Vessel carrying blood towards the heart" , "part of a vital system" , "Speaker's useless" , "Blood-carrying vessel" , "Blood-vessel" .)