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

• tetradrachm
• tetradrachms
• tetrads
• tetradymite
• tetradymites
• Tetradynamia
• tetradynamous
• tetraethyl
• tetraethyl lead
• tetrafluoroethylene
• tetragon
• tetragonal
• tetragonally
• tetragonous
• tetragons
• tetragram
• tetragrammaton
• tetragrammatons
• tetragrams
• Tetragynia
• tetragynian
• tetragynous
• tetrahedra
• tetrahedral
• tetrahedrally