1. Of metals e.g.; not made shiny and smooth by friction

See also: unpolished

• trolley
• trolley car
• trolley coach
• trolley line
• trolleybus
• trolleyed
• trolling
• Trollius
• trollop
• Trollope
• Trombicula
• trombiculiasis
• trombiculid
• Trombiculidae
• trombidiid
• Trombidiidae
• trombone
• trombone player
• trombonist
• trommel
• tromp
• trompe-l'oeil
• trompillo
• trona
• Trondheim