Related Terms. 1  operating system virtualization. 2  mobile operating system (OS). 3  OS-operating system. 4  server operating system. 5  system. 6  Microsoft Windows XP operating system. 7  Linux OS (Operating System). 8  paravirtualized operating system. 9  NOS-network operating system. 10  Chrome OS.
Prune and shape evergreen shrubs to provide year-round hedges, ground covers and privacy screens in your yard. The scarlet firethorn (Pyracantha coccinea) and Chinese holly (Ilex cornuta) shrubs produce red-colored berries and dark-green leaves.
Classic Broadleaf Evergreen Bushes. In the landscaping of my region (New England, U.S.), holly shrubs are more commonly found than the corresponding tree form. But Ilex species span quite a variety of sizes, shapes and, consequently, uses. Indeed, one cultivar, 'Helleri,' can function as a ground cover.