* The storm felled several trees in the park, leaving a trail of destruction. (meaning: knocked down)
* The lumberjack felled the giant oak with a single swing of his axe. (meaning: cut down)
* The weight of his grief felled him to his knees. (meaning: overwhelmed)
* The warrior was felled by a single blow from his opponent's sword. (meaning: defeated)
* The doctor felled the patient with a sedative before the surgery. (meaning: put to sleep)
As you can see, "felled" can have different meanings depending on the context. It's often used to describe something being knocked down or overcome, but it can also be used to describe something being cut down or put to sleep.