They connect heads to bodies (5)
I believe the answer is:
necks
'they connect heads to bodies' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for necks that I've seen before include "Drinks" , "They connect head to body" , "Features of swans and giraffes" , "Smooches" , "They connect heads to bodies" .)