Simple Definition of backbone
: the row of connected bones that go down the middle of the back and protect the spinal cord
: the most important or strongest part of something
: strength and courage
Full Definition of backbone
2 : something that resembles a backbone: as a : a chief mountain ridge, range, or system b : the foundation or most substantial or sturdiest part of something c : the longest chain of atoms or groups of atoms in a usually long molecule (as a polymer or protein) d : the primary high-speed hardware and transmission lines of a telecommunications network (as the Internet)
3 : firm and resolute character
4 : spine 1c
backbonedplay \-ˌbōnd\ adjective
Examples of backbone in a sentence
She is the backbone of the family.
He showed some backbone by refusing to compromise his values.
First Known Use of backbone
BACKBONE Defined for Kids
Seen and Heard
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