pennycress

or pen·ny cress, pen·ny-cress

[pen-ee-kres]

noun

any of several plants belonging to herbs of the genus Thlaspi, of the mustard family, especially T. arvense, of Europe, bearing somewhat round, flat pods.

Origin of pennycress

First recorded in 1705–15; penny + cress
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pennycress

pennycress

noun

any of several plants of the genus Thlaspi of temperate Eurasia and North America, typically having small white or mauve flowers and rounded or heart-shaped leaves: family Brassicaceae (crucifers)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012