Fromcross +‎bone, acalque ofGermanKreuzbein(“sacrum”).

cross-bone (pluralcross-bones)

1. (obsolete, anatomy) Thesacrum.
   • 1879,Ernst Haeckel, “Development of the Organs of Motion”, inThe Evolution of Man: A Popular Exposition of the Principal Points of Human Ontogeny and Phylogeny, volume 2, New York:D. Appleton and Company, page282:

     Next comes thecross-bone (sacrum), which is inserted between the two halves of the pelvic girdle. Thiscross-bone consists of five fixed and amalgamated cross-vertebræ.

• crossbones

• English compound terms
• English terms calqued from German
• English terms derived from German
• English lemmas
• English nouns
• English countable nouns
• English multiword terms
• English terms with obsolete senses
• en:Anatomy
• English terms with quotations
• en:Skeleton

• Pages with entries
• Pages with 1 entry