The term "poppy" refers to any plant within the genus Papaver, part of the Papaveraceae family, commonly known as the poppy family. These are mostly annual or perennial herbs that produce milky sap, strikingly bright flowers, and capsule-shaped fruits.
The group includes the opium poppy as well as several species cultivated for decorative purposes.
"See the full definition before the 12th century, in the meaning defined at sense 1a 1970, in the meaning defined above 'Poppy.'"
Source: Merriam-Webster Dictionary, poppy
Related resources include Nglish for Spanish translations and Britannica for encyclopedic articles about the poppy plant.
Author’s summary: The poppy is an herbaceous plant from the Papaveraceae family known for its vivid blossoms, milky sap, and cultural significance.