Definition of "pooped"

Well, I've walked 35 miles since yesterday to get here, so I'm pooped

2000, Jeff Alt, A Walk For Sunshine: A 2,160 Mile Expedition for Charity on the Appalachian Trail, page 138

Then - a shock of water, a wild rush of boiling foam, and I was clinging for my life to the shroud, ay, swept straight out from it like a flag in a gale. We were pooped. The wave passed. It seemed to me that I was under water for minutes - really it was seconds.

1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887