What is the meaning of Vertical?

Standing, pointing, or moving straight up or down; parallel to the local direction of gravity; along the direction of a plumb line; perpendicular to something horizontal.

In a two-dimensional Cartesian co-ordinate system, describing the axis y oriented normal (perpendicular, at right angles) to the horizontal axis x.

In a three-dimensional co-ordinate system, describing the axis z oriented normal (perpendicular, orthogonal) to the basic plane xy.

Of or pertaining to vertical markets.

Involving different vintages of the same wine type from the same winery.

Of an interval: having the two notes sound simultaneously.

A vertex or zenith.

A vertical geometrical figure; a perpendicular.

An individual slat in a set of vertical blinds.

A vertical component of a structure.

A vertical market.

A command structure for exertion of political power.

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Source: wiktionary.org