edging

noun

trimming, often with one scalloped or indented edge and one straight edge to be sewn to the edge of a garment

Pronunciation: /ˈɛd͡ʒ.ɪŋ/

Anything that forms, defines, or marks the edge of something.
“The decorative edging around the door makes it easier to find in the dark.”
“A means was found, for example, of fitting rubber edging to the doors and still retaining the handle and door lock.”
A technique involving the placement of the edge of the climbing shoe on a sharp hold.
The operation of shaping or dressing the edge of anything, as of a piece of metal.
The sexual technique of maintaining a high level of sexual arousal for an extended period of time without reaching orgasm.