pennycress

or pen·ny cress, pen·ny-cress

[ pen-ee-kres ]
/ ˈpɛn iˌkrɛs /

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

British Dictionary definitions for pennycress

pennycress
/ (ˈpɛnɪˌkrɛs) /

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)