Run through to find the little devil having a drink (6)
I believe the answer is:
impale
'run through' is the definition.
(I've seen this in another clue)
'the little devil having a drink' is the wordplay.
'the little devil' becomes 'imp' (an imp is a little demon).
'having' means one lot of letters go next to another.
'a drink' becomes 'ale' (type of beer).
'imp'+'ale'='IMPALE'
'to find' acts as a link.
(Other definitions for impale that I've seen before include "Puncture" , "Pierce, run through" , "Kill by piercing with a spear or sharp pole" , "Pierce with a sharp stake" , "Pierce with pointed stick" .)