S: (n) backbone (the part of a network that connects other networks together) "the backbone is the part of a communication network that carries the heaviest traffic"
S: (n) fabric, cloth, material, textile (artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers) "the fabric in the curtains was light and semitransparent"; "woven cloth originated in Mesopotamia around 5000 BC"; "she measured off enough material for a dress"