Top Definition
(pronouced Ah-llon-s-win)
Allonswin is the pairing of the Tenth Doctor (David Tennant) and Clara Oswald (Jenna-Louise Coleman) in the British Television Sci-fi/Drama Doctor Who. The name comes from the Tenth Doctor's catchphrase, 'Allons/y' and Clara's username, 'Os/win', therefore, Allonswin. Though only seen in one episode together, they are an immensely popular couple, though not as popular as Whoufflé.
If you're reading a story about the Tenth Doctor and Clara Oswald in a relationship, romantic or otherwise, and you support it, you like 'Allonswin'.
by artiehazelmissy January 05, 2014

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