Hat or hood imported from US to UK (6)
I believe the answer is:
bonnet
'hat' is the definition.
(bonnet is a kind of hat)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for bonnet that I've seen before include "Car part" , "Baby's cap" , "Baby's hat" , "Woman's hat with string tied under the chin" , "Hat - American hood" .)