subirrigation /sub-i-ri-gāˈshən/

1. Irrigation by underground pipes
2. Irrigation from beneath

• blue-pencil
• blue-pencilled
• blue-pencilling
• blue pencils
• blue-pencils
• Blue Peter
• blue pipe-tree
• blue pointer
• blue pointers
• blue poppy
• blueprint
• blueprinted
• blueprinting
• blueprints
• blue quandong
• bluer
• blue riband
• blue ribands
• blue ribbon
• Blue Ribbon Army
• blue ribbons
• blue rinse
• blue-rinse
• blue-rinsed
• blue rinsers