Beat it with small clubs and hammer (5)
I believe the answer is:
scram
'beat it' is the definition.
(I've seen this before)
'small clubs and hammer' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'and' is a charade indicator (letters next to each other).
'hammer' becomes 'ram' (I can't justify this - if you can you should believe this answer much more).
's'+'c'+'ram'='SCRAM'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for scram that I've seen before include "Slangy order to go away, beat it" , "Scarper" , "Go away quickly" , "beat hasty retreat" , "In slang, go away and beat it" .)