also: ぺたんこ · ぺちゃんこ · ぺしゃんこ · ぺっちゃんこ
na-adjective, noun which may take the genitive case particle 'no'
crushed flat; flattened; squashed
Describes something that has been completely flattened or squashed, often with a nuance of being beyond repair. Used as a na-adjective or no-adjective.
The box was crushed flat.
He's wearing a flat-topped hat.
flat-chested girl
Colloquial and slang term, often used in manga or casual speech to refer to a girl or woman with a flat chest. Can be teasing or humorous.
She's self-conscious about being flat-chested.
sound of a sticky rice cake sticking
Mimetic word for the soft, sticky sound made when something like mochi adheres to a surface. Often used adverbially with と.
The mochi stuck to the mallet with a soft thud.