Clip of Bolt's retirement (4)
I believe the answer is:
snip
'clip of bolt's retirement' is the definition.
'snip' can be an answer for 'clip' ('snip' can be a synonym of 'clip'). I'm unsure of the 'of bolt's retirement' bit.
'clip of bolt's retirement' is the wordplay.
'clip of' means to look at the middle letters (I've seen 'clip' mean this (the wings or edge letters of the word get clipped)).
'bolt's' becomes 'dashs' ('dash' can be a synonym of 'bolt').
'retirement' becomes 'nip' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The centre of 'dashs' is 's'.
's'+'nip'='SNIP'
Can you help me to learn more?
(Other definitions for snip that I've seen before include "Trim, clip" , "Cut; bargain (colloq.)" , "Surprisingly cheap item" , "Cut - price bargain" , "Bargain - crop" .)