Charlock yana nufin tsire-tsire na dangin mustard mai furanni rawaya mai haske da mai tushe mai gashi da ganye. Sunan kimiyya na wannan shuka shine Sinapis arvensis, amma kuma ana kiranta da mustard daji, mustard charlock, mustard field, ko charlock. Hakanan ana iya amfani da kalmar “charlock” wajen yin nuni ga irin wannan shuka, wanda a wasu lokuta ana amfani da shi azaman yaji ko kuma don samar da mai.