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|Noun||1.||tower mustard - or genus Arabis: erect cress widely distributed throughout Europe|
cress, cress plant - any of various plants of the family Cruciferae with edible leaves that have a pungent taste
|2.||tower mustard - European cress having stiff erect stems; sometimes placed in genus Turritis|
Arabis, genus Arabis - annual to perennial woody herbs of temperate North America, Europe and Asia: rockcress