also: じゃけついばら
noun
Mysore thorn; Caesalpinia decapetala var. japonica
A thorny climbing shrub native to East Asia, often used for hedges. The scientific name is Caesalpinia decapetala var. japonica.
ジャケツイバラは鋭いとげがあるので、生け垣によく使われる。
Mysore thorn has sharp thorns, so it is often used for hedges.
The name ジャケツイバラ likely derives from the thorny nature of the plant (茨, ibara) and possibly a descriptive prefix, but the exact origin is uncertain.