Conversation so far:
what role did Herb Jeffries have in films, actor, or what?
to star in.
what genre of films did he star in?
musical westerns.
what other films did he do?
Calypso Joe (1957).
In 1968, Jeffries appeared in the long-running western TV series The Virginian.
did he win any awards?
CANNOTANSWER.
did any of his films flop?
CANNOTANSWER.
what else interesting can you tell me about his film career?
Jeffries became known as the "Bronze Buckaroo" by his fans.

Question: what does bronze buckaroo mean?
Self-contained rewrite: What does bronze buckaroo mean to Herb Jeffries?