What is "breathier"

Usage examples of "breathier".

Finally it repeated the song Ofelia had sung to the babies, in a voice she realized must be hers, though it sounded breathier, more like an old woman’s voice than she heard it inside.

But the voice was Hilda's, all right-a little fainter than I was used to, a little breathier, but definitely Hilda.

But the voice was Hilda’s, all right-a little fainter than I was used to, a little breathier, but definitely Hilda.