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

Encyclopedia: Lustral

• big-bang theory
• big-bellied
• big-boned
• big-bud hickory
• big-chested
• big-cone douglas fir
• big-cone spruce
• big-eared bat
• big-eyed scad
• big-leaf maple
• big-name
• big-shouldered
• big-ticket
• big-tree plum
• bigamist
• bigamous
• bigamy
• bigarade
• bigeminal
• bigeneric
• bigeye
• bigeye scad
• Bigfoot
• bigger
• biggie