Cuckooflower is a little-known term for a plant that belongs to the family of Brassicaceae. This plant is also known by different names, depending on the region where it grows. Some of the synonyms for the cuckooflower include Lady's Smock, Meadow Cress, and Milkmaid. These names are used interchangeably to refer to the same plant species. Lady's Smock is a name commonly used in Europe, while Meadow Cress is a common name in North America. Milkmaid, on the other hand, is a name commonly used in the United Kingdom. All these synonyms describe the same plant that grows in clusters with white or pink flowers.