cauliflower means: Brassica oleracea is a member of the cabbage family. It has a head known as a curd, which is a tightly packed, white variety. A purple variety can also be found partially covered by large waxy pale green leaves. Some varieties may have a greenish or purple tinge. (in Cooking Dictionary)

What else does cauliflower mean?

Plant (Brassica oleracea var. botrytis) A large white head with undeveloped flowers in the mustard family. (in Merlin Dictionary)

This plant’s flower heads can be eaten as a vegetable. (in Merlin Dictionary)