Campion \Cam"pi*on\, n. [Prob. fr. L. campus field.]

(Bot.) A plant of the Pink family (Cucubalus bacciferus), bearing berries regarded as poisonous.

Bladder campion, a plant of the Pink family (Cucubalus Behen or Silene inflata), having a much inflated calyx. See Behen.

Rose campion, a garden plant (Lychnis coronaria) with handsome crimson flowers.

Source: Webster's Revised Unabridged Dictionary (1913)