Maybe Miley had something to do with it.
The raunchy dance move is among a number of new words included in the latest revision of Oxford Dictionaries Online.
Other terms include "selfie" for a camera-phone self-portrait, "digital detox" for time spent offline, and the shopping phrase "click and collect".
Here's the full list of new words:
Twerk, v.: dance to popular music in a sexually provocative manner involving thrusting hip movements and a low, squatting stance.
Selfie, n. (informal): a photograph that one has taken of oneself, typically one taken with a smartphone or webcam and uploaded to a social media website.
Bitcoin, n.: a digital currency in which transactions can be performed without the need for a central bank.
Digital detox, n.: a period of time during which a person refrains from using electronic devices such as smartphones or computers, regarded as an opportunity to reduce stress or focus on social interaction in the physical world.
Click and collect, n.: a shopping facility whereby a customer can buy or order goods from a store's website and collect them from a local branch.
Hackerspace, n.: a place in which people with an interest in computing or technology can gather to work on projects while sharing ideas, equipment, and knowledge.
Food baby, n.: a protruding stomach caused by eating a large quantity of food and supposedly resembling that of a woman in the early stages of pregnancy.
Street food, n.: prepared or cooked food sold by vendors in a street or other public location for immediate consumption.
Double denim, n.: a style of dress in which a denim jacket or shirt is worn with a pair of jeans or a denim skirt, often regarded as a breach of fashion etiquette.
Geek chic, n.: the dress, appearance, and culture associated with computing and technology enthusiasts, regarded as stylish or fashionable.
