from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. A game of doubles, as in tennis, that is played with each team composed of one man and one woman.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A game played between two teams, each consisting of a female and a male.
Sorry, no etymologies found.
You could cruise around, catch a great five-set match on some obscure court, discover an up-and-coming player, see singles, doubles, and mixed doubles matches all in the glorious sunshine.