Definition of charlock in English:


Syllabification: char·lock
Pronunciation: /ˈCHärˌläk, -lək


  • A wild mustard with yellow flowers, commonly found as a weed in fields and along roadsides.
    • Brassica kaber (or Sinapis arvensis), family Brassicaceae
    More example sentences
    • At one test site, researchers found a GM version of the common weed charlock growing in the field, the year after the GM trial.
    • Chickweed, charlock (yellow flowers) and runch (white flowers) plants are now big enough to cause some concern.
    • In California, the cultivated radish, Raphanus sativus, and the jointed charlock, R. raphanistrum, have completely merged.


Old English cerlic, cyrlic, of unknown origin.

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