Entry from British & World English dictionary
Any of a number of plants which have parts that are said to resemble a turban or similar headdress, in particular:
- ● (also Turk’s cap lily) the martagon lily. ● (also Turk’s cap cactus) a barrel-shaped Caribbean cactus (Melocactus communis, family Cactaceae).
Definition of Turk's cap in: