

The old wooden door has a heavy iron lock.
[ði ˈoʊld ˈwʊdn̩ ˈdɔr həz ə ˈhɛvi ˈaɪərn ˈlɑk.]
Somebody broke the lock on the tower door.
[ˈsəmˌbədi ˈbroʊk ðə ˈlɑk ˈɔn ðə ˈtaʊər ˈdɔr.]
We don't have keys for all these old locks.
[wi ˈdoʊnt həf ˈkiz fər ˈɔl ˈðiz ˈoʊld ˈlɑks.]
"lock" is in the lesson "Middle ages" (Level 30), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 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.