They are the definitions of 'another'

Question

1. one more person or thing of the same type
2. DIFFERENT
a different one not the same thing, person etc, but a different one
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3. One man said, "Yesterday, I killed a big dragon with my kick."

4. Another man stepped up. "I have a talking dog," said the man.

[In that case, what is the meaning of 'another' in Sentence 4? Does 'another' in #4 mean #1 or #2 in meaning?]

Answer 1

In 4, it's a second man, but still a man. He's not a different type; he's just not the same man as in 3.