Definitions

1. noun

A plant with leaves that resemble those of basil, but it’s actually a member of the milkweed family.

“The hikers encountered a patch of basilweed in the forest, which they later identified as a type of milkweed.”

2. noun

A plant of the genus Argemone, especially Argemone mitchellii, also known as prickly poppy.

“The fields were covered in a sea of prickly poppy, also known as basilweed, that bloomed in the summer.”