Ajwain
Flowers of Trachyspermum ammi
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Apiales
Family:	Apiaceae
Genus:	Trachyspermum
Species:	T. ammi
Binomial name
Trachyspermum ammi (L.) Sprague ex Turrill
Synonyms
Ammi copticum L. Carum copticum (L.) Link Trachyspermum copticum Link Sison ammi L.

Ajwain, ajowan (/ˈædʒəwɒn/), or Trachyspermum ammi—also known as ajowan caraway, thymol seeds, bishop's weed, or carom—is an annual herb in the family Apiaceae. Both the leaves and the seed‑like fruit (often mistakenly called seeds) of the plant are consumed by humans. The name "bishop's weed" also is a common name for other plants. The "seed" (i.e., the fruit) is often confused with lovage "seed".