It seems you're asking about "moon holes," but there is no recognized astronomical term for that.

It's likely you're referring to one of these:

* Lunar Maria (Singular: Mare): These are large, dark plains of solidified lava on the Moon's surface. They appear darker than the surrounding highlands because they reflect less sunlight.

* Craters: These are large depressions on the Moon's surface, formed by impacts from asteroids, meteoroids, and comets.

Please provide more context or a description of what you're looking for, and I'll try my best to help!