1. Sleep inducing
   - soporific, soporiferous, somnific, hypnogogic, hypnagogic

See also: depressant

• plutonium trigger
• plutonomy
• pluvial
• Pluvialis
• Pluvianus
• Pluvianus aegyptius
• pluviometer
• Pluviose
• ply
• plyboard
• plyer
• plyers
• Plymouth
• Plymouth Colony
• Plymouth Rock
• plywood
• Plzen
• PM
• PMS
• PMT
• pneumatic
• pneumatic caisson
• pneumatic drill
• pneumatic hammer
• pneumatic tire