Shot cut trip short (3)
I believe the answer is:
'shot cut' is the definition.
'rid' can be an answer for 'shot' (getting shot of something is getting rid of it). I am not sure about the 'cut' bit.
'trip short' is the wordplay.
'trip' becomes 'ride' (eg a trip in a car).
'short' means to remove the last letter.
'ride' with its last letter removed is 'RID'.
Can you help me to learn more?
(Other definitions for rid that I've seen before include "Lose, shake off" , "Free (person of affliction)" , "Free from something unpleasant" , "Free (someone of something unwanted)" , "Throw off, unburden" .)