edging
n. C / Un. a decorative or protective border along the side of something. It is often used in gardening or sewing to make a clean finish.
n. a border or fringe used for decoration or to provide a clean finish to an object. Often refers to materials used to separate different areas of a garden or the finishing on a piece of fabric.
The garden has a stone edging to keep the grass tidy.
She chose a delicate lace edging for the hem of the dress to give it a vintage look.
The landscape architect recommended a flexible steel edging to create a crisp, permanent boundary between the gravel pathway and the surrounding flower beds.
Uncountable when referring to the material in general; countable when referring to a specific strip or decorative piece.