|1.||a nontechnical name for spinal column|
|2.||something that resembles the spinal column in function, position, or appearance|
|3.||strength of character; courage|
|4.||the main or central mountain range of a country or region|
|5.||nautical the main longitudinal members of a vessel, giving structural strength|
|6.||computing (in computer networks) a large-capacity, high-speed central section by which other network segments are connected|
backbone back·bone (bāk'bōn')
See spinal column.