The list of words Merriam-Webster gives you as potential alternatives if you search for "hairline fracture":
1. ethnocentricity
2. ethnocentrisms
3. wienerwursts
4. harmonicists
5. half-worlds
6. hornlessnesses
7. ethnocentrism
8. homeomorphisms
9. homomorphisms
10. harmlessnesses
"Hairline" is, of course, nowhere to be seen.
Posted by Francis at 02:31 AM