title_body: Is there a word for "skull" in Klingon?
upvoted_answer: Indeed, there doesn't seem to be any canon word for "skull" in Klingon, so a compound should be fine.  
  
  Note, however, that some compounds are constructed without separation between their parts (see for example Wiktionary's list of Klingon compound words) with no apparent rule as to why, so "skull" could conceivably be nachHom.  
  
  BUT, since -Hom is also the diminutive suffix, nachHom would primarily mean "little skull", making nach Hom is the less ambiguous translation.