Queen Anne's lace noun3 •(US, Canada) A flowering plant, species Daucus carota, especially the flowering part of the plant.There were wildflowers alongside the vegetable patches at the edge of the pavement, Queen Anne’s lace whispering against Kirsten’s outstretched hand. — 2014 •Ammi majus (false Queen Anne's lace), native to the Nile River Valley, with white lace-like flower clusters. •Anthriscus sylvestris (cow parsley), a herbaceous biennial or short-lived perennial plant in the family Apiaceae.