lung

I made a speaking trumpet of my hands and commenced to whoop “Ahoy!” and “Hello!” at the top of my lungs. […] The Colonel woke up, and, after asking what in brimstone was the matter, opened his mouth and roared “Hi!” and “Hello!” like the bull of Bashan.

He hasn't the lungs to play long rallies like he use to.

Afterwards he found that the vague feeling of alarm had spread to the clients of the underground railway, and that the Sunday excursionists began to return from all the South-Western "lungs" - Barnes, Wimbledon, Richmond Park, Kew, and so forth - at unnaturally early hours[.]