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

• switchings
• switchman
• switchmen
• switch off
• switch on
• switch-over
• switch-overs
• switch-plant
• switch-plants
• switch selling
• switchy
• swith
• swither
• swithered
• swithering
• swithers
• swits
• switsed
• switses
• switsing
• Switzer
• swive
• swived
• swivel
• swivelblock