Having difficulty breathing; gasping.
Having no wind; still, calm or airless.
Having a somewhat hysterical tone, using over-emotive language.
Not breathing; dead or apparently so.
That makes one hold one's breath (with excitement etc.).
Very tired; exhausted.
Incorporating a bush, a mechanical part.
Mentally unwell due to isolation, especially due to working in a remote mine or camp; experiencing cabin fever.
Lost in the bush.