A sharp-crested weir allows the water to fall cleanly away from the weir.
Sequences that do not cleanly fall into a cluster (singletons) are indicated in blue in Figure 1.
It fell cleanly between the two monsters.
A final series of blows, a judicious poke with the jackknife, and the piece fell cleanly cloven.
In most cases, though, pity the straight-to-video movie that doesn't fall cleanly into a genre.
Yet in New England, Connecticut falls cleanly into a countertrend.
"It shows this issue is not going to fall cleanly on party lines, especially here."
Some indicators do not cleanly fall into the previous categories.
There are also many interesting border cases that don't fall cleanly into one of these layers.
The head of the dummy jumped a little, then fell cleanly into the waiting basket.