gru-gru or groo-groo /grooˈgroo/

1. A name for several tropical American palms related to the coconut palm, yielding oil-nuts
2. An edible weevil grub (also gru-gru worm) found in their pith

• invalid
• invalidate
• invalidated
• invalidates
• invalidating
• invalidation
• invalidations
• invalided
• invalidhood
• invalidhoods
• invaliding
• invalidings
• invalidism
• invalidisms
• invalidities
• invalidity
• invalidly
• invalidness
• invalidnesses
• invalids
• invaluable
• invaluableness
• invaluably
• Invar
• invariabilities