cyt·​i·​sus | \-səs, -zəs\

Definition of cytisus 

1 capitalized : a large genus of stiff or spiny shrubs (family Leguminosae) native to Europe, northern Africa, and western Asia and having showy racemose flowers with a 2-lipped calyx — see broom sense 1

2 plural cytisi : a plant of the genus Cytisus

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History and Etymology for cytisus

New Latin, from Latin, a shrub (Medicago arborea), from Greek kytisos

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living or existing for a long time

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