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Noun jerusalem thorn has 4 senses
- Christ's-thorn, Jerusalem thorn, Paliurus spina-christi - thorny Eurasian shrub with dry woody winged fruit
--1 is a kind of shrub, bush
--1 is a member of Paliurus, genus Paliurus
- jujube, jujube bush, Christ's-thorn, Jerusalem thorn, Ziziphus jujuba - spiny tree having dark red edible fruits
--2 is a kind of shrub, bush
--2 is a member of Ziziphus, genus Ziziphus
--2 has parts: jujube, Chinese date, Chinese jujube
- Jerusalem thorn, horsebean, Parkinsonia aculeata - large shrub or shrubby tree having sharp spines and pinnate leaves with small deciduous leaflets and sweet-scented racemose yellow-orange flowers; grown as ornamentals or hedging or emergency food for livestock; tropical America but naturalized in southern United States
--3 is a kind of shrub, bush
--3 is a member of Parkinsonia, genus Parkinsonia
- catechu, Jerusalem thorn, Acacia catechu - East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
--4 is a kind of acacia
--4 is a member of genus Acacia
--4 has substances: black catechu, catechu
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