Noun
Any of several species of tropical plants with contrasting patterns of light and dark on their leaves, which are grown as houseplants, especially:
Aphelandra squarrosa (saffron spike)
Calathea zebrina (syn. Goeppertia zebrina)
Cryptanthus zonatus
Aechmea chantinii (Amazonian zebra plant)
Haworthiopsis attenuata (syn. Haworthia attenuata; zebra haworthia)
Source: en.wiktionary.org