Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Humanbuck teethˌbuck ˈteeth noun [plural] HBHteeth that stick forward out of your mouth —buck-toothed /ˌbʊk ˈtuːθt◂/ adjectiveOrigin buck teeth (1500-1600) Because they are like a rabbit's teeth ldoceonline.com