Home › Words › T › toothblacktoothblacktoothblack means A substance used by certain tribes to blacken the teeth.Among words judged in Lexicurio's Arena, toothblack ranks #30,893 of 42,762 for Qualifying.EtymologyFrom tooth + black.nounA substance used by certain tribes to blacken the teeth.Definitions & examples from Wiktionary (CC BY-SA 3.0).