From the observatory's dome, she sketched the huge walled plain on the Moon, noting its broad, smooth floor and the high, broken rim.

Astronomers study the formation of walled plains to understand the Moon's impact history.

She came up with an off the wall plan to turn the abandoned mall into an urban farm.

She went balls to the wall to finish the project before the deadline.

When customers stopped coming, the sudden drop in sales was the writing on the wall for the shop's future.

Plant cell walls provide structural support and protection against pathogens.

After months of missed targets and budget cuts, the handwriting on the wall was clear: the startup would need to downsize.

The movement of the domain wall under an applied magnetic field determines the magnetization dynamics of the material.

We decided to buy a custom wall unit to maximize storage in the living room.

The builders recommended installing a cavity wall to improve insulation and prevent damp.