Bind broken parts (5)
I believe the answer is:
strap
'bind' is the definition.
(I know that strap is a more specific form of bind)
'broken parts' is the wordplay.
'broken' is an anagram indicator.
'parts' with letters rearranged gives 'STRAP'.
(Other definitions for strap that I've seen before include "punishment in school" , "Strong band for binding luggage etc" , "Parts (anag.)" , "Shoulder band" , "Fasten; punishment" .)