Little point keeping recording in reserve (5)
I believe the answer is:
depot
'reserve' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'little point keeping recording' is the wordplay.
'little point' becomes 'dot' (synonyms. I am not sure about the 'little' bit.).
'keeping' indicates putting letters inside (some letters kept inside).
'recording' becomes 'EP' (short for Extended Play, type of record).
'dot' going around 'ep' is 'DEPOT'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for depot that I've seen before include "Wherein bus drivers" , "Military HQ" , "Bus station or warehouse" , "Supply base" , "bus terminus" .)