The Collaborative International Dictionary of English v.0.48:

Celandine \Cel"an*dine\ (s[e^]l"[a^]n*d[imac]n), n. [OE.
   celidoine, OF. celidoine, F. ch['e]lidoine, fr. L. chelidonia
   (sc. herba), fr. chelidonius pertaining to the swallow, Gr.
   chelido`nios, fr. chelidw`n the swallow, akin to L. hirundo a
   swallow.] (Bot.)
   A perennial herbaceous plant (Chelidonium majus) of the
   poppy family, with yellow flowers. It is used as a medicine
   in jaundice, etc., and its acrid saffron-colored juice is
   used to cure warts and the itch; -- called also greater
   celandine and swallowwort.
   [1913 Webster]

   Lasser celandine, the pilewort (Ranunculus Ficaria).
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Chelidonic \Chel`i*don"ic\, a. [See Celandine.] (Chem.)
   Of, pertaining to, or derived from, the celandine.
   [1913 Webster]

   Chelidonic acid, a weak acid extracted from the celandine
      (Chelidonium majus), as a white crystalline substance.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Chelidonium majus
    n 1: perennial herb with branched woody stock and bright yellow
         flowers [syn: celandine, greater celandine,
         swallowwort, swallow wort, Chelidonium majus]