Here are 10 of the new words, with their OED definitions:
1. Amp — To make (a person) very excited or energetic (as if) through the consumption of amphetamines or another stimulant. Frequently used with upWelcome to the new world.
2. Beatboxing — The action or practice of imitating the sounds of an electronic drum machine with the voice.
3. Buzzkill — A person who, or thing which, dampens enthusiasm or enjoyment.
4. Chill Pill — An anti-depressant; anything intended to calm a person down (take a chill pill, calm down, relax).
5. Ghetto Fabulous — Pertaining to or favoring an ostentatious style of dress associated with the hip-hop subculture.
6. Monobrow — A pair of eyebrows that meet above the nose, giving the appearance of a single eyebrow; a person with such eyebrows, jocularly — a stupid person.
7. Pimpmobile — A large, flashy car, especially one used by a pimp.
8. Rockism — The theory that traditional rock music is a more authentic form of popular music than pop music.
9. Secret Sauce — A special feature or technique kept secret by an organization and regarded as being the chief factor in its success.
10. Splitsville — The termination of a relationship, especially a romantic one.