Definition of "selvage"

(weaving) The edge of a woven fabric, where the weft (side-to-side) threads run around the warp (top to bottom) threads, creating a finished edge.  examples

Any edge of fabric finished so as to prevent raveling.  quotations  examples

(printing) The excess area of any printed or perforated sheet, such as the border on a sheet of postage stamps or the wide margins of an engraving.  examples

(geology) A distinct border of a mass of igneous rock. It is usually fine-grained or glassy due to rapid cooling.

(geology) Clay-like material found along and around a geological fault.

The edge plate of a lock, through which the bolt passes  examples

(mining) That part of a lode adjacent to the walls on either side.  examples

To give a selvage to (fabric).  examples