Canberra loses race helping the internal movement of food (4)
I believe the answer is:
bran
'food' is the definition.
(bran is a kind of food)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for bran that I've seen before include "Pieces of grain husks" , "Food from the husks of cereal grains" , "Horse food stored in barn" , "DOG" , "Refuse from grain" .)