Jack-by-the-hedge Meaning, Definition & Usage

  1. noun European herb that smells like garlic
    sauce-alone; garlic mustard; hedge garlic; Alliaria officinalis.

WordNet

Definitions
  1. (Bot.), a plant of the genus Erysimum (E. alliaria, or Alliaria officinalis), which grows under hedges. It bears a white flower and has a taste not unlike garlic. Called also, in England, sauce-alone. Eng. Cyc.

Webster 1913