What does "charlock" mean?

Any of several yellow-flowered cruciferous weeds of grain fields, especially wild mustard (Rhamphospermum arvense, syn. Sinapis arvensis).

What is a synonym for "charlock"?

Common synonyms include: brassica kaber, chadlock, field mustard, sinapis arvensis, wild mustard.

noun

noun ·Rare ·Advanced level

Noun

1
Any of several yellow-flowered cruciferous weeds of grain fields, especially wild mustard (Rhamphospermum arvense, syn. Sinapis arvensis). countable, uncountable
2
weedy Eurasian plant often a pest in grain fields wordnet

From Middle English charlok, cherlok, from Old English ċyrlic, ċirlic, ċerlic. Further origin unknown.