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• senna
  senna

  noun

  any plant, shrub, or tree belonging to the genus Cassia, of the legume family, having pinnate leaves and large clusters of flowers.
• Senna
  Senna

  noun

  Ayrton (ˈɛətən). 1960–94, Brazilian racing driver: world champion (1988, 1990, 1991)

senna

American  

[sen-uh] / ˈsɛn ə /

noun

1. any plant, shrub, or tree belonging to the genus Cassia, of the legume family, having pinnate leaves and large clusters of flowers.

2. any of various cathartic drugs consisting of the dried leaflets of certain of these plants, as one drug Alexandrian senna derived from C. acutifolia, or another Tinnevelly senna derived from C. angustifolia.

3. wild senna.

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senna ¹ British  

/ ˈsɛnə /

noun

1. any of various tropical plants of the leguminous genus Cassia , esp C. angustifolia ( Arabian senna ) and C. acutifolia ( Alexandrian senna ), having typically yellow flowers and long pods

2. the dried leaflets of any of these plants, used as a cathartic and laxative

3. the dried fruits of any of these plants, used as a cathartic and laxative

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Senna ² British  

/ ˈsɛnə /

noun

1. Ayrton (ˈɛətən). 1960–94, Brazilian racing driver: world champion (1988, 1990, 1991)

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Etymology

Origin of senna

1535–45; < New Latin < Arabic sanā

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Example Sentences

See Examples For:

senna Senna

In fact, we do not recommend it since the senna it contains is a harsh laxative unsuitable for regular use.

From Seattle Times ● Jun. 7, 2023

Other recent blooms include a native grass called needle grama, brittle creosote, desert senna, Acton encelia or brittlebush, and big galleta grass.

From Los Angeles Times ● Sep. 8, 2021

They include various asclepias, tithonia, giant coneflower and the Maryland wild senna, the last a native plant deserving much more garden use.

From Washington Post ● May 28, 2019

Flat Tummy Co’s tea contains senna, a laxative, which Scherr said could help with bloating but could also lead to dependence on laxatives.

From The Guardian ● Aug. 29, 2018

Senna A safe and efficient aperient for cattle may be made by infusing an ounce of senna in a quart of boiling water.

From The American Reformed Cattle Doctor by George Dadd

Ayrton Senna is pictured on the grid speaking to members of his Lotus team before the 1986 race, which he won from pole position.

From BBC ● Oct. 19, 2026

Daniel Senna, a 31-year-old patient at the Maugeri Hospital, transmits his pain level on a screen attached to the robot's chest.

From Barron's ● Jun. 19, 2026

And, like Senna, his legacy will long outlive him.

From BBC ● May 2, 2026

When he was in the hospital, Senna came to offer "any financial help at all".

From BBC ● Feb. 27, 2026

I saw a director, the Muslim-Indian director, capture the smoking, tragic charisma of Ayrton Senna.

From "Love, Hate & Other Filters" by Samira Ahmed

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