1.
side, beside
The area next to something.
2.
width, horizontal
The horizontal dimension.
横 indicates the horizontal dimension or the area beside something.
Sense 1 - BESIDE/SIDE
Sense 2 - HORIZONTAL/WIDTH
Similar words
縦 (vertical, length) ↔ 横 (horizontal, width)
Compounds
Related Words
Antonym:
縦 (vertical, lengthwise)