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

• lumber-mill
• lumber-mills
• lumber-pie
• lumber-pies
• lumber room
• lumber rooms
• lumbers
• lumbersome
• lumbersomeness
• lumbersomenesses
• lumber-yard
• lumber-yards
• lumbrical
• lumbricalis
• lumbrical muscle
• lumbricals
• lumbrici
• Lumbricidae
• lumbriciform
• lumbricoid
• lumbricus
• lumbricuses
• lumen
• lumenal
• lumens