The moon's surface is covered with rilles.

I love to sit by the rill and listen to the soothing sound of flowing water.

The water continued to rill down the hillside.

The rills in the field were filled with rainwater.

The lunar surface is covered with numerous rilles.

She rilled the dough into a perfect circle.

The water is rilling down the hill.

My friend's last name is Rilling.

The Rillings are a talented group of musicians.

Rill erosion occurs when small channels are formed on the surface of the soil due to the flow of water.