backbone /ˈbækˌboʊn/ noun plural backbones
plural backbones
Learner's definition of BACKBONE
1
[count] : the row of connected bones that go down the middle of the back and protect the spinal cord脊椎;脊柱;脊骨 — called also spinal column, spine
— see picture at human 2
[count] : the most important or strongest part of something支柱;骨干 3
[noncount] : strength and courage骨气;勇气