

У меня болит зуб.
I have a toothache.
Какой зуб у вас болит?
Which tooth hurts?
У сына выпал первый зуб.
My son lost his first tooth.
"зуб" is in the lesson "Body parts 1" (Level 2), along with 14 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.