What does horny mean?

What is horny?

Commonly used slang term to describe someone who is sexually aroused and/or stimulated to the point where they feel the urgent need to resolve the issue.

Definition

Used in the early 19th Century, based on an erection resembling a horn. Common phrase used by most, to describe their sexual state, or impart their desire. There are many other terms used, such as fired up, full of beans, have the hots, in heat, and many more.