Vertical (adjective)

Upright; perpendicular to the plane of the horizon or to a given base line.

Origin:

Late middle english: from latin verticalis, from vertere 'to turn'.

Examples:

1. The walls of the room were painted a light vertical blue.
2. A vertical line runs from the top to the bottom of the page.
3. The building has a vertical design, with many tall, narrow windows.
4. The pilot was in control of the aircraft, which was flying in a vertical position.
5. The tower has a very tall vertical antenna that reaches up into the sky.