noun, noun which may take the genitive case particle 'no'
pajamas; pyjamas
Refers to sleepwear, typically a two-piece set. Can also be used attributively with の to describe pajama-like items.
新しいパジャマを買った。
I bought new pajamas.
パジャマ姿で朝ごはんを食べた。
I ate breakfast in my pajamas.
After taking a bath, I changed into my pajamas.
On my day off, I stayed home all day still in my pajamas.