Selvage:
- the edge of woven fabric finished so as to prevent raveling, often in a narrow tape effect, different from the body of the fabric.
- any similar strip or part of surplus material, as at the side of wallpaper.
- Also called margin. Philately. the surplus paper or margin around a sheet of stamps:
The number of the plate block appears in the selvage. - a plate or surface through which a bolt of a lock passes. [Dictionary.com]
Noted in this video from Baumgartner Restoration, last year’s holiday season video, which also showcases a quite dry sense of humor:
The actual word selvage appears around the 50-55 second mark. BONUS: This year’s holiday season video!