noun
lower side; lower edge; lower border; lower hem
Refers to the bottom part, edge, or border of something. Can be used for physical objects, shapes, or areas.
図形の下辺の長さを測ってください。
Please measure the length of the lower side of the figure.
カーテンの下辺が床に少しついている。
The lower hem of the curtain is slightly touching the floor.