Celebrity kidnapping fool rejected list of terms (8)
I believe the answer is:
'list of terms' is the definition.
'glossary' can be an answer for 'list' (I have seen 'Explanatory list ' mean 'glossary' so perhaps 'list' could also mean 'glossary'). I am not sure about the 'of terms' bit.
'celebrity kidnapping fool rejected' is the wordplay.
'celebrity' becomes 'glory' (I've seen this in another clue).
'kidnapping' means one lot of letters goes inside another.
'fool' becomes 'ass' (both can mean a stupid person).
'rejected' shows that the letters should be reversed in order.
'ass' in reverse letter order is 'ssa'.
'glory' going around 'ssa' is 'GLOSSARY'.
Can you help me to learn more?
(Other definitions for glossary that I've seen before include "Alphabetical list of technical terms" , "Explanation of words" , "Explanation of terms" , "List of terms used in a particular subject" , "List of technical words with definitions" .)