1. Of or pertaining to, or used for, purification; as, lustral days; lustral water 
2. Of or pertaining to a lustrum

Encyclopedia: Lustral

• piquet
• piracy
• pirana
• Pirandello
• Piranga
• Piranga flava hepatica
• Piranga ludoviciana
• Piranga olivacea
• Piranga rubra
• piranha
• pirate
• pirate flag
• pirate ship
• piratical
• piratically
• piriform area
• piriform lobe
• pirn
• pirogi
• pirogue
• piroplasm
• piroshki
• pirouette
• piroxicam
• pirozhki