Webster's Revised Unabridged Dictionary · 1913

Campion

Campion , noun

[Probably from Latin campus field.]

(Botany) A plant of the Pink family (Cucubalus bacciferus), bearing berries regarded as poisonous.
Collocations (2)
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.