noun
Refers to the armrest of a chair, sofa, or vehicle seat. A straightforward loanword used in everyday contexts.
この椅子のアームレストは調節できます。
The armrests on this chair are adjustable.
飛行機のアームレストを上げてください。
Please raise the armrest on the plane.
肘掛け is the native Japanese word for armrest, used interchangeably with アームレスト but slightly more formal or traditional in feel.
Borrowed from English 'armrest'.