Jam the slot so a letter don't properly fall inside it.

She saw, too, that her story properly fell into short chapters and redivided it.

If you don't know how to fall properly, you might as well hang it up.

It will fall properly into place as you become more yourself.

Without them, the pins would be too bottom-heavy to fall properly when struck.

I know how to fall properly, and do so as a matter of reflex in normal conditions.

A question arises whether it more properly falls within one or the other.

At the end Hikaru was simply glad that he knew how to fall properly.

Their faces were darkened, as though the light did not fall on them properly; they looked sly.

A rifle can also be used to properly fell an animal while hunting.