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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Origin and Etymology of sisymbrium
Latin, a fragrant herb, perhaps mint, from Greek sisymbrion bergamot, watercress
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