Do one small cocaine hit (5)
I believe the answer is:
scram
'do' is the definition.
The definition and answer can be both to do with motion as well as being verbs in their base form.
Maybe there's a link between them I don't understand?
'one small cocaine hit' is the wordplay.
'one small' becomes 's' (abbreviation - e.g. clothes size).
'cocaine' becomes 'C' (drugs abbreviation).
'hit' becomes 'ram' (ram can mean to hit something).
's'+'c'+'ram'='SCRAM'
Can you help me to learn more?
(Other definitions for scram that I've seen before include "Buzz off!" , "Shoo!" , "Clear off!" , "Beat it, get lost, go away" , "make emergency shut-down" .)