More on backbone from Fact Monster:

• Backbone Mountain - Backbone Mountain Backbone Mountain, peak, 3,360 ft (1,024 m) high, NW Md., in the Allegheny Mts.; ...
• spinal column - spinal column spinal column, bony column forming the main structural support of the skeleton of ...
• vertebrate - vertebrate vertebrate, any animal having a backbone or spinal column. Verbrates can be traced back ...
• invertebrate - invertebrate invertebrate , any animal lacking a backbone. The invertebrates include the tunicates ...
• Andes - Andes Andes , mountain system, more than 5,000 mi (8,000 km) long, W South America. The ranges run ...

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