Definition

Noun: 1. A small evergreen tree or shrub (Salvadora persica), native to arid regions of Africa, the Middle East, and the Indian subcontinent. It is known for its fibrous twigs traditionally used as a natural toothbrush (miswak), and its shoots are used as fodder for camels. 2. A common name for the Nicotiana glauca, an evergreen shrub native to South America but naturalized in other warm regions. It is also called "tree tobacco" and is toxic to livestock.

Usage Examples

• The mustard tree () is highly valued in many cultures for its medicinal and practical uses.
• Farmers were warned about the toxic mustard tree () invading the pasture.
• Twigs from the mustard tree have been used for oral hygiene for centuries.

Advanced Usage

• The term "mustard tree" is a common name applied to botanically distinct plants. The specific plant being referred to must be inferred from context (geography, use, or scientific name).
• In historical or religious contexts, references to a "mustard tree" often relate to the parable in the New Testament, though the specific plant species is debated by scholars.

Variants and Related Words

• Toothbrush tree: A direct common name for , referring to its primary traditional use.
• Miswak: The name for the teeth-cleaning twig made from .
• Tree tobacco: The more accurate and common name for .

Different Meanings

1. Botanical/Ethnobotanical Meaning: Refers to , a useful plant for tools and fodder.
2. Toxicological/Agricultural Meaning: Refers to , a poisonous plant harmful to animals.

Synonyms

• For : Arak tree, peelu tree, toothbrush tree.
• For : Tree tobacco, wild tobacco, mustard bush.

Notes on Usage

• Due to the potential for confusion between two very different plants, it is often best to use the scientific names ( or ) for clarity, especially in academic or agricultural writing.
• The name "mustard tree" is misleading, as neither plant is closely related to the mustard plant used as a condiment ( species).

Noun

1. glabrous or pubescent evergreen shrub or tree of the genus Salvadora; twigs are fibrous and in some parts of the world are bound together in clusters and used as a toothbrush; shoots are used as camel fodder; plant ash provides salt
2. evergreen South American shrub naturalized in United States; occasionally responsible for poisoning livestock