| Subject | English | Japanese |
| gen. | n backbone chain | 幹ポリマー (polymer) |
| comp. | n backbone network | バックボーン・ネットワーク |
| comp. | n backbone network | バックボーンネットワーク |
| gen. | backbone of a society or community | 主柱 |
| gen. | backbone range | 脊梁山脈 |
| comp., MS | backbone router | バックボーン ルーター (In Open Shortest Path First (OSPF), a router that is connected to the backbone area. This includes routers that are connected to more than one area (area border routers (ABRs)). However, backbone routers do not have to be ABRs. Routers that have all networks connected to the backbone are internal routers) |
| comp. | n campus backbone | キャンパス・バックボーン |
| comp. | n campus backbone | キャンパスバックボーン |
| gen. | lacking integrity or moral backbone | 骨抜き news1 nf18 |
| comp. | n multicast backbone | マルチキャスト・バックボーン (Mbone) |
| comp. | n multicast backbone | マルチキャストバックボーン (Mbone) |