The phrase "little hole" typically refers to a small opening or gap in something. It can be used to describe a small opening in a surface, object, or even clothing.
Sentences with «little hole»
It has been producing very well but now I am seeing little holes in the leaves. (fieryfoodscentral.com)
He then reached under the table and pulled out a vase filled with sand and started pouring it into the jar filling up all of the tiny little holes. (careercoaching360.com)