1.  juniper(n = noun.plant) genista raetam, juniper bush, raetam, retama raetam, retem - desert shrub of Syria and Arabia having small white flowers; constitutes the juniper of the Old Testament; sometimes placed in genus Genista;
is a kind of bush, shrub
is a member of genus retama, retama

2.  juniper(n = noun.plant) - coniferous shrub or small tree with berrylike cones;
is a kind of cypress
has parts: juniper berry
is a member of genus juniperus, juniperus
has particulars: pencil cedar, pencil cedar tree, juniperus silicicola, southern red cedar, dwarf juniper, juniperus sabina, savin, common juniper, juniperus communis, dwarf juniper, ground cedar, juniperus communis depressa, creeping juniper, juniperus horizontalis, drooping juniper, juniperus flaccida, mexican juniper

   Any evergreen shrub or tree, of the genus Juniperus and order Coniferæ. [1913 Webster]
" The common juniper (Juniperus communis) is a shrub of a low, spreading form, having awl-shaped, rigid leaves in whorls of threes, and bearing small purplish blue berries (or galbuli), of a warm, pungent taste, used as diuretic and in flavoring gin. A resin exudes from the bark, which has erroneously been considered identical with sandarach, and is used as pounce. The oil of juniper is acrid, and used for various purposes, as in medicine, for making varnish, etc. The wood of several species is of a reddish color, hard and durable, and is used in cabinetwork under the names of red cedar, Bermuda cedar, etc." [1913 Webster]

juniper, n. any evergreen shrub or tree of the genus Juniperus, esp. J. communis with prickly leaves and dark purple berry-like cones.

Idiom:
oil of juniper oil from juniper cones used in medicine and in flavouring gin etc.

Etymology:
ME f. L juniperus

common juniper, creeping juniper, drooping juniper, dwarf juniper, juniper berries, juniper berry, juniper bush, mexican juniper, red juniper