also: ないとうえあ
noun
nightwear; nightclothes
A general term for clothing worn to sleep, such as pajamas, nightgowns, or robes. A straightforward loanword from English.
新しいナイトウェアを買った。
I bought new nightwear.
旅行のときは、いつもお気に入りのナイトウェアを持っていく。
When I travel, I always bring my favorite nightclothes.