1. Woolly-stemmed biennial arborescent shrub of tropical Africa and southern Asia having silvery-white prickly branches, clusters of blue or white flowers, and bright red berries resembling holly berries
   - African holly

Type of: nightshade

• olive ridley
• olive tree
• olive-brown
• olive-colored
• olive-coloured
• olive-drab uniform
• olive-gray
• olive-green
• olive-grey
• olive-sized
• olive-tree agaric
• olivelike
• olivenite
• Oliver
• Oliver Cromwell
• Oliver Ellsworth
• Oliver Goldsmith
• Oliver Hardy
• Oliver Hazard Perry
• Oliver Heaviside
• Oliver Stone
• Oliver Wendell Holmes
• Oliver Wendell Holmes Jr.
• Olivier
• olivine