The rim, edge, or brim of something—the narrow boundary part such as the rim of a cup, the edge of paper, or a cliff's brink.
お皿の縁にソースが付いている。
There's sauce on the rim of the plate.
崖の縁に立って写真を撮るのは危ない。
Standing on the edge of a cliff to take photos is dangerous.
窓ガラスの縁を丁寧に拭いてください。
Please carefully wipe the edges of the window glass.