Q:

What does "to give out" mean when talking about a person?

Billy Joel, in the song She's Always a Woman, writes, 

Oh, and she never gives out, and she never gives in. She just changes her mind.

I understand that by "give in" he means "cease fighting or arguing; admit defeat." What does he mean by "she never gives out"? The only meaning of this phrase that I am familiar with is "be completely used up," but that doesn't seem to make sense here. 

A:

Well, I think taking "never gives out" to mean "never breaks down/never ceases to function/always keeps going" makes the most sense here. 

A:

I am not exactly sure if this is a valid explanation (as it is referenced from Wiktionary) but it does fit in well with the Meaning of the song.

To Give Out : (Ireland, idiomatic) To
  complain, sulk, chastise.

Based on the above, the line - 

She never gives out - She never gives
  in - She just changes her mind

seems to all fit in with this meaning.

