敷居(しきい)とは?【建築用語・土木用語・大工用語】 門の仕切りとして下部に敷く横木。引き戸や障子、ふすまなど、開け閉めする箇所の下部に敷く横木もいいます。 Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window