Medical Dictionary

black mustard

noun

medical Definition of black mustard

1 :a yellow-flowered annual Eurasian herb (Brassica nigra) that is a source of table mustard
2 :the dried ripe seed of black mustard or a relative (Brassica juncea) that was formerly much used in medicine as a rubefacient and emetic

Seen and Heard

What made you want to look up black mustard? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

alert quickness of mind or body

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!