/ ˌʃeɪz ˈlɒŋ; NAmE ˈlɔːŋ/ noun ( pl. chaises longues / ˌʃeɪz ˈlɒŋ; NAmE ˈlɔːŋ/) (from French )
1.
a long low seat with a back and one arm, on which the person sitting can stretch out their legs
2.
( NAmE ) (also informal chaise lounge ) a long chair with a back that can be vertical for sitting on or flat for lying on outdoors
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WORD ORIGIN
early 19th cent.: French , literally long chair .