Very briefly ruler forms relationship with tramps (9)
I believe the answer is:
vagabonds
'tramps' is the definition.
(I know this)
'very briefly ruler forms relationship' is the wordplay.
'very briefly' becomes 'v' (abbreviation; 'briefly' suggests an abbreviation).
'ruler' becomes 'aga' (I've seen this before).
'forms relationship' becomes 'bonds' (I can't justify this - if you can you should believe this answer much more).
'v'+'aga'+'bonds'='VAGABONDS'
'with' is the link.
Can you help me to learn more?
(Another definition for vagabonds that I've seen is " They wander from place to place without home or job".)