I’m jumping American, but oddly I’m no ogre (8)
I believe the answer is:
geronimo
'i'm jumping american' is the definition.
I can't judge whether this definition defines the answer.
'oddly i'm no ogre' is the wordplay.
'oddly' is an anagram indicator.
'im'+'no'+'ogre'='imnoogre'
'imnoogre' with letters rearranged gives 'GERONIMO'.
'but' acts as a link.
Can you help me to learn more?
(Other definitions for geronimo that I've seen before include "he's called for the high jump?" , "Apache chieftain - US paratroopers war cry when jumping" , "battle cry" , "American shout on jumping out of an aeroplane?" , "shout during dive" .)