A little extra place for sword (2,3,4)
I believe the answer is:
on the side
'a little extra' is the definition.
'on the side' can be an answer for 'extra' (thesaurus). I am not sure about the 'a little' bit.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for on the side that I've seen before include "Additionally, maybe illicitly" , "(Of vegetables) firm" , "Like illicit relationship" , "Capped" , "secret?" .)