from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A fictional little fat man who is the twin brother of Tweedle-dum and appears in multiple artistic works, including certain nursery rhymes and Lewis Carroll's Through the Looking-Glass.
- n. One of a pair (the other of the pair being Tweedle-dum) of nominally different (often: but practically identical) things.
The names "Tweedledum" and "Tweedledee" first appeared in print in one of John Byrom's epigrams, which satirised the disagreements between Handel and Bononcini. They were made popular by Lewis Carroll's Alice in Wonderland. (Wiktionary)