caterpillar /katˈər-pi-lər/

1. A butterfly or moth grub
2. Extended to other insect larvae
3. An unproductive consumer (archaic)
4. (Caterpillar®) a tractor or other (esp earthmoving) vehicle running on endless articulated tracks made up of a series of flat metal plates

• Atkins diet
• at knife-point
• ATL
• Atlantean
• Atlantes
• Atlantic
• Atlantic Charter
• Atlanticism
• Atlanticist
• Atlantic seal
• Atlantic Standard Time
• Atlantic Time
• Atlantis
• Atlantosaurus
• at large
• atlas
• ATLAS
• Atlas
• atlases
• at last
• atlatl
• atlatls
• at least
• at leisure
• at length