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

• ureteric
• ureterites
• ureteritis
• ureters
• urethan
• urethane
• urethanes
• urethans
• urethra
• urethrae
• urethral
• urethras
• urethritic
• urethritis
• urethroscope
• urethroscopes
• urethroscopic
• urethroscopies
• urethroscopy
• uretic
• urge
• urged
• urgence
• urgences
• urgencies