A name of the Dwarves translated “Masters of Stone” (S/91), a combination of gond “stone”, hîr “lord, master” and the class-plural suffix -rim (SA/gond, heru).
Sindarin
gonnhirrim
noun. Gonnhirrim
gonnhirrim
collective name. Masters of Stone
gonnhirrim
noun. Dwarves (lit. "Masters of Stone")
lords of stone (S for “dwarves”); gond (“stone”) + hîr (“lord”) + rim (collective plural suffix)