They enable us to hold our heads high (5)
I believe the answer is:
necks
'they' is the definition.
Both the definition and answer are plural nouns.
Maybe you can see an association between them that I don't see?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for necks that I've seen before include "behaves amorously" , "Smooches" , "They connect heads to bodies" , "Features of swans and giraffes" , "Kisses amorously" .)