What does "calandine" mean?

Calandine: A perennial herbaceous plant (Chelidonium majus) of the poppy family, with yellow flowers. It is used as a medicine in jandice, etc., and its acrid saffron-colored juice is used to cure warts and the itch; -- called also greater celandine and swallowwort. Lasser celandine, the pilewort (Ranunculus Ficaria).