- any goosefoot of the genus Chenopodium, especially C. album.
- any of certain amaranths, as Amaranthus retroflexus.
Origin of pigweed
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pigweed
First, I picked the pigweed and tansy, or how could she have made the cheese?Aunt Madge's Story
A pigweed, and a month from now it would be waist high to you.The Black Fawn
James Arthur Kjelgaard
Weed seeds such as those of spurges (Euphorbia), ragweed, and pigweed were found in trace amounts in the diet of the crows.
A plant like the pigweed, which lives only one year, is called an annual and is one of the easiest weeds to destroy.Agriculture for Beginners
Charles William Burkett
Barnyard grass (Panicum crusgalli) behaved like pigweed, and 'needed considerable attention.'
- Also called: redroot any of several coarse North American amaranthaceous weeds of the genus Amaranthus, esp A. retroflexus, having hairy leaves and green flowers
- a US name for fat hen