The property of being horizontal.

(gymnastics) A horizontally-aligned bar used in gymnastics, upon which acts of swinging are performed. / (gymnastics) A gymnastics event using the horizontal bar.

Ukrainian distilled spirit, sometimes flavoured with hot peppers.

horizontalness

A cable run installed inside a building wall.

(idiomatic, euphemistic) Sexual intercourse.

plural of horizontalist

An advocate or believer in horizontalism.

A political or social theory or system that advocates the equitable distribution of power in a society.

(marketing) A market that encompasses a wide variety of industries.