policeman's helmet

noun

The invasive plant Impatiens glandulifera, native to the Himalayas.

Meanings

noun
  1. UKuncountableThe invasive plant Impatiens glandulifera, native to the Himalayas.

    Of the nonnative species, only the policeman's helmet (I. glandulifera) has a similar floral structure, though its flowers are normally purple to blue and occasionally white; its leaves and stems can be used similarly to our native species.

    2008, Bradford Angier, Field Guide to Medicinal Wild Plants, Stackpole Books, →ISBN

    Synonyms: Himalayan balsam

  2. Used other than figuratively or idiomatically: see policeman, helmet.

Synonyms & antonyms

nounThe invasive plant Impatiens glandulifera, native to the Himalayas.

Origin

From the shape of the flower.

Full word history & related roots →
Cite this entry
APA

policeman's helmet. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/policeman's%20helmet

MLA

“policeman's helmet.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/policeman's%20helmet. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “policeman's helmet,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/policeman's%20helmet.

Source: policeman's helmet on Wiktionary, CC BY-SA 4.0.