Definition of Mexican poppy in English:

Mexican poppy

noun

  • 1A prickly poppy, Argemone mexicana, with spiny leaves and yellow flowers, which is native to Central America, is grown for ornament, and has become a weed in many warm countries.

  • 2United States regional any of several plants of the south-western United States that have poppy-like flowers.

Origin

Early 19th century; earliest use found in William Titford (1784–1823), accountant and botanist.