

Я натёр ногу, и теперь там волдырь.
I rubbed my foot raw, and now there's a blister there.
От новых туфель у меня волдыри на пятках.
My new shoes gave me blisters on my heels.
Не надо прокалывать волдырь, это опасно.
Don't pop the blister; it's dangerous.
"волдырь" is in the lesson "Sickness" (Level 9), along with 17 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.