Definition of horror

• n. - A bristling up; a rising into roughness; tumultuous movement.
• n. - 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.
• n. - A painful emotion of fear, dread, and abhorrence; a shuddering with terror and detestation; the feeling inspired by something frightful and shocking.
• n. - That which excites horror or dread, or is horrible; gloom; dreariness.