Webster's Revised Unabridged Dictionary · 1913

Horror

Horror , noun

[Formerly written horrour.]

1.
A bristling up; a rising into roughness; tumultuous movement. [Archaic]
Such fresh horror as you see driven through the wrinkled waves. — Chapman
2.
A shaking, shivering, or shuddering, as in the cold fit which precedes a fever; in old medical writings, a chill of less severity than a rigor, and more marked than an algor.
3.
A painful emotion of fear, dread, and abhorrence; a shuddering with terror and detestation; the feeling inspired by something frightful and shocking.
How could this, in the sight of heaven, without horrors of conscience be uttered? — Milton
4.
That which excites horror or dread, or is horrible; gloom; dreariness.
Breathes a browner horror on the woods. — Pope
Collocations (1)
The horrors , delirium tremens. [Colloquial]