The letter W.
More example sentences
- We ran a story yesterday we which hoped would solve the irritating need to repeat "double-u, double-u, double-u dot" every time you are talking about a Web site.
- The double-U shape makes getting stuff in and out quick and simple.
- French double-v is English double-u.
late 16th century: the letter W represented as a word.
Definition of double U in:
- The British & World English dictionary