And nipped outside to get the outlaw (6)
I believe the answer is:
bandit
'outlaw' is the definition.
(I know that bandit is a type of robber)
'and nipped outside to get the' is the wordplay.
'nipped' becomes 'bi' (I can't justify this - if you can you should believe this answer much more).
'outside' is an insertion indicator.
'to get' says to put letters next to each other.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'and' inserted into 'bi' is 'bandi'.
'bandi'+'t'='BANDIT'
Can you help me to learn more?
(Other definitions for bandit that I've seen before include "Armed robber in the Wild West" , "(One-armed?) outlaw" , "Armed brigand" , "Violent robber" , "Crook" .)