Some examples of word usage: keel over
1. The old man suddenly keeled over while walking down the street.
Перевернулся
2. The ship keeled over in the stormy seas, causing panic among the crew.
Опрокинулся
3. I felt dizzy and thought I might keel over at any moment.
Упасть
4. The heavy bookshelf keeled over and crashed to the ground.
Упал
5. The tree keeled over in the strong wind, narrowly missing the house.
Повалилось
6. The exhausted hiker keeled over at the end of the trail, completely spent.
Опрокинулся