gabion; stone-filled cage
A cylindrical or box-shaped wire mesh container filled with stones, used in civil engineering and erosion control. Often compared to 蛇籠 (じゃかご), a similar gabion structure.
See also: 蛇籠 (じゃかご)
Gabions were used in the riverbank protection work.
Futonkago often have a flatter shape compared to jakago.
Kanji spelling using 布団 (futon) and かご (basket/cage). Less common than the kana form.
Rare kanji spelling using 篭 (cage). The 篭 character is not a standard jōyō kanji and is seldom used.
Compound of 布団 (futon, 'futon mattress') and かご (kago, 'basket' or 'cage'), likely from the resemblance of the flat, mattress-like shape of the gabion to a futon.