Where does “Lounge” come from?

Lounge (German) comes from English lounge, from French s'allonger — to lie down.

Lounge (German): lounge

Definitions

Step	Language	Word	Meaning
1	English	lounge	A waiting room in an office, airport etc; A...
2	French	s'allonger	to lie down

Lounge — Etymology, Origin & Word History | Etymology Explorer