juniper UK /ˈd͡ʒuːnɪpə/US /ˈd͡ʒunɪpɚ/ noun3 •Any shrub or tree of the genus Juniperus of the cypress family, which is characterized by pointed, needle-like leaves and aromatic berry-like cones.On the mountains a few junipers and piñons are found, and cactuses, agave, and yuccas, low, fleshy plants with bayonets and thorns. — 1895 •One of a number of coniferous trees which resemble junipers. •(slang, no longer used) Gin. formsjunipers