horny

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Having horns or hornlike projections.
• adjective Made of horn or a similar substance.
• adjective Tough and calloused.
• adjective Desirous of sexual activity.
• adjective Sexually aroused.

from The Century Dictionary.

• Consisting or composed of horn, or something like horn; corneous.
• Resembling horn; hard or otherwise like horn; callous: as, horny hands.
• Specifically — In entomology, chitinous: used to designate any hard part of the integument or interior organs of an insect.
• In botany, hard and close in texture, but not brittle, as the albumen of many plants.
• In sponges, fibrous; ceratodous, as an ordinary sponge, as distinguished from a chalk-sponge or a glass-sponge.
• Having a horn or horns; having corns, callosities, or processes like horns.
• noun The devil, as usually represented with horns: generally with the prefix old (Scotch auld.) Also spelled Hornie.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Having horns or hornlike projections.
• adjective Composed or made of horn, or of a substance resembling horn; of the nature of horn.
• adjective Hard; callous.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Hard or bony, like an animal's horn.
• adjective Having horns
• adjective informal, vulgar Sexually aroused.
• adjective informal Sexually arousing.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective feeling great sexual desire
• adjective having horns or hornlike projections
• adjective made of horn (or of a substance resembling horn)