rockcress

from WordNet (r) 3.0 (2006)
rockcress
    n 1: noxious cress with yellow flowers; sometimes placed in
         genus Sisymbrium [syn: {yellow rocket}, {rockcress},
         {rocket cress}, {Barbarea vulgaris}, {Sisymbrium barbarea}]
    2: any of several rock-loving cresses of the genus Arabis [syn:
       {rock cress}, {rockcress}]
    

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