1. Ornamental plant of Middle East cultivated for its dark purple spathe
   - black calla

Type of: aroid, arum

Part of: genus Arum

• boringness
• Boris Fyodorovich Godunov
• Boris Godunov
• Boris Karloff
• Boris Leonidovich Pasternak
• Boris Pasternak
• Boris Spassky
• Boris Vasilevich Spassky
• born
• born-again
• born-again Christian
• Bornean
• Borneo
• Bornholm disease
• bornite
• Borodin
• Borodino
• boron
• boron chamber
• boron counter tube
• boron trifluoride
• boronic
• borosilicate
• borough
• borough English