Wie oben schon gesagt ist ein pup tent
"a small, usually wedge-shaped tent for two persons". (https://www.merriam-webster.com/dictionary/pu...
Das wäre der modernere Gebrauch. Der Begriff scheint sich aus einer älteren Form des pup tent entwickelt zu haben:
pup tent n. orig. U.S. Mil. a small tent or bivouac, a dog-tent; spec. a shelter tent comprising two shelter halves carried separately.
1863 J. Adams Diary "About 10 a.m. we . . . pitched our pup-tents."
1917 Collier's "When a halt is reached, each pair of men set up their tent poles, stretch the line as a ridge, tie their canvas sheets together, and peg them down as a cover. The result is familiarly called a ‘pup’ tent."
1930 F. A. Pottle "I suppose everyone has seen a ‘pup tent’ at some time or other, but he may not have realized that in the army it is shelter for two men."
2005 Variety "One of them is supposed to spend nights in a distant pup tent to protect the sheep from predators."
--Oxford English Dictionary (online)