insole; shoe insert; inner sole
Refers to the removable inner layer inside a shoe, often for comfort or fit adjustment.
After putting an insole in my new shoes, they became easier to walk in.
Rare usage for a rug or carpet placed on the floor. More commonly expressed with 敷物 or カーペット.
This insole can be removed and washed.
In old documents, a floor covering is sometimes called 中敷き.
Common spelling with okurigana, making the reading clear.
Kanji-only spelling; less common but still used.
Compound of 中 (naka, 'inside') and 敷き (shiki, 'spreading, laying'), from the verb 敷く (shiku, 'to spread, lay'). Literally 'inside spread', referring to something laid inside a shoe or on the floor.