winter cress

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various herbs of the genus Barbarea of the mustard family, having pinnately divided basal leaves and yellow flowers.

Century Dictionary and Cyclopedia

1. n. A cruciferous plant, either Barbarea vulgaris or B. præcox. both formerly (and the latter still sparingly) cultivated for winter salad. Both are Old World plants, and the former is very common in North America, though indigenous only in the north and west. This is a stoutish weed with bright-green lyrate leaves and conspicuous yellow racemes, also called yellow rocket, and sometimes (to distinguish it from the water-cress) land-cress. The latter, the early winter-cress (which may be a variety of the former), is cultivated and sometimes spontaneous in southern parts of the United States, there called scurvy-grass.

GNU Webster's 1913

1. n. (Bot.) a yellow-flowered cruciferous plant (Barbarea vulgaris).

WordNet 3.0

1. n. cress cultivated for winter salads
2. n. any plant of the genus Barbarea: yellow-flowered Eurasian cresses; widely cultivated for winter salad