What does "pennycress" mean?

Any of several plants, of the genus Thlaspi, that have flattened seedpods (in the form of an old penny).

What is a synonym for "pennycress"?

Common synonyms include: mithridate, mithridate mustard, scaleweed.

Pennycress

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
Any of several plants, of the genus Thlaspi, that have flattened seedpods (in the form of an old penny).
"“What on earth did you put in that stuff?” “Bug-bane, barren-wort, penny-cress and blood-root, catchfly, toad-flax, nap-weed and wormwood,” said Catweazle."
2
any of several plants of the genus Thlaspi wordnet

Synonyms

All synonyms

mithridate mithridate mustard scaleweed

Example

More examples

"“What on earth did you put in that stuff?” “Bug-bane, barren-wort, penny-cress and blood-root, catchfly, toad-flax, nap-weed and wormwood,” said Catweazle."

Etymology

From penny + cress.

Related phrases

field pennycress

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.