pedrail /pedˈrāl/

1. A tractor with footlike pieces on the circumference of its wheels
2. One of the pieces

• triennials
• triennium
• trienniums
• trier
• trierarch
• trierarchal
• trierarchies
• trierarchs
• trierarchy
• triers
• tries
• trieteric
• triethyl
• triethylamine
• triethylamines
• trifacial
• trifacial nerve
• trifacial nerves
• trifarious
• trifecta
• trifectas
• triff
• triffer
• triffest
• triffic