Poem about tiny people, members of a tribe (8)
I believe the answer is:
edomites
'a tribe' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'poem about tiny people members' is the wordplay.
'poem' becomes 'ode' (ode is a kind of poem).
'about' shows that the letters should be reversed in order.
'tiny people members' becomes 'mites' (I can't explain this - if you can you should give a lot more credence to this answer).
'ode' back-to-front is 'edo'.
'edo'+'mites'='EDOMITES'
'of' acts as a link.
Can you help me to learn more?
(Another definition for edomites that I've seen is " Hebrew people of long ago".)