The most common and most likely answer to this crossword clue is the 7 letter word SHAWNEE
S
H
A
W
N
E
E
Buddy explains!
The straight part
We know that "member of a tribe" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case member of a tribe = shawnee.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SHAWNEE mean?
SHAWNEE noun- Virginia waterleaf (Hydrophyllum virginianum)