SINCE 1828
sisymbrium
noun
si·sym·bri·um
| \ sə̇ˈsimbrēəm\
Definition of sisymbrium
1
capitalized
: a genus of annual or biennial herbs (family Cruciferae) having a pubescence of simple unbranched hairs, lyrate pinnatifid leaves, and terete stems and comprising the hedge mustards — see descurainia
2
plural -s
: any plant of the genus Sisymbrium
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