The famous Star Wars terms are now so much part of our language that they've been included in the book. The force also makes an appearance.
And Star Wars isn't the only sci-fi phenomenon to make it into the dictionary.
Klingon, warp drive, warp factor and dilithium, made famous by cult show Star Trek, are also there.
Bunny boiler
There's loads of new slang terms in the dictionary as well. Words like shedload, wedgie and get real now appear in the book.
Some of them are even funnier. Essex Man, chick flick and bunny boiler - used to describe a possessive girlfriend - also feature in the new book.
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