The reason why hairballs form is that some loose strands of hair can get stuck in small crevices in the stomach and duodenum. (mypetneedsthat.com)
The way you work a chisel into small crevices of very large, seamed stone, Stephen Harper has been patiently exerting for years, inserting his wedge issues here and there, giving them twists to see what might pop loose. (thetyee.ca)
«We can make it sneak through very small crevices in order to get access to places where people can't go. (businessinsider.com)