pi·per·o·nal 
(pī-pĕrə-năl′, pĭ-)
(pī-pĕrə-năl′, pĭ-)n.
A white powder, C8H6O3, having a floral odor, used as flavoring and in perfume.
[PIPER(INE) + -ON(E) + -AL3.]
- water of hydration
- water on the brain
- water ouzel
- water park
- water parting
- water pepper
- water pill
- water pipe
- water pistol
- water plantain
- water polo
- waterpower
- waterproof
- water purslane
- water rat
- water-repellent
- water-resistant
- water right
- Waters
- water sapphire
- waterscape
- water scooter
- water scorpion
- watershed
- water shield