Oscar sails around with a Native American tribe (7)
I believe the answer is:
ojibwas
'oscar sails around with a native american tribe' is the definition.
I can't judge whether this definition defines the answer.
'oscar sails around with a' is the wordplay.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'sails' becomes 'jibs' (jibbing is a kind of sailing).
'around' means one lot of letters goes inside another.
'with' becomes 'w' (abbreviation).
'w'+'a'='wa'
'jibs' placed around 'wa' is 'jibwas'.
'o'+'jibwas'='OJIBWAS'
Can you help me to learn more?
(Other definitions for ojibwas that I've seen before include "American folk" , "Native Americans from Michigan; jaws bio (anag.)" .)