Dog collars cruciverbalists put back are delightful (7)
I believe the answer is:
bewitch
'back are delightful' is the definition.
I can't judge whether this defines the answer.
'dog collars cruciverbalists put' is the wordplay.
'dog' becomes 'bitch' (I've seen this before).
'collars' is an insertion indicator (to collar can mean to apprehend or capture).
'cruciverbalists put' becomes 'ew' (I am not sure about this - if you are sure you should believe this answer much more).
'bitch' enclosing 'ew' is 'BEWITCH'.
Can you help me to learn more?
(Other definitions for bewitch that I've seen before include "Cast a spell upon" , "Spellbind" , "add glamour" , "Put under a spell, or delight" , "Captivate" .)