English

Noun

knapbottle ‎(uncountable)

1. Bladder campion.
   • 1640, John Parkinson, Theatrum Botanicum: The Theater of Plants:

     It is accounted a kinde of Lychnis by most of the best Herbalists, and therefore Bauhinum nameth it Lychnis Sylvestrus que Ben Album vulgo: some with us call it Knapbottle, and others Spatting or Frothy Poppy.