cress means: Cress, a member of the mustard family is available in many varieties. There are many varieties of cress, including watercress, broadleaf and peppergrass. You can use cress in salads, soups and garnishes. Its peppery tang can also be recognized. (in Cooking Dictionary)
What else does cress mean?
One of the many plants belonging to the mustard family that have pungent leaves such as watercress or garden cress. (in Merlin Dictionary)