backbone

(Anglų k.)

  1. (countable) The series of vertebrae, separated by disks, that encloses and protects the spinal cord, and runs down the middle of the back in vertebrate animals.
  2. (countable, figuratively) Any fundamental support, structure, or infrastructure.
  3. (figuratively, uncountable) Courage, fortitude, or strength.

Dažnis

C2
Tariamas kaip (IPA)
/ˈbækˌbəʊn/
Etimologija (Anglų k.)

In summary

From Middle English bakbon, bakebon, bac-bon; equivalent to back + bone. Compare the semantically analogous English ridgebone.

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