Wiktionary
n. 1 The leaves of a tea plant which have been processed in a manner to let them wilt slightly and lose their "grassy" taste of green tea while undergoing minimal oxidation. 2 A drink brewed from these tea leaves. 3 Tea served with milk.
Wikipedia
White tea may refer to one of several styles of tea which generally feature young and/or minimally processed leaves. Currently there is no generally accepted definition of white tea and very little international agreement; some sources use the term to refer to tea which is merely dried with no additional processing, while others include tea buds and very young leaves which have been steamed or fired before drying. Most definitions agree, however, that white tea is not rolled or oxidized, resulting in a flavour which is characterized as "lighter" than green or traditional black teas.
It is harvested primarily in China, mostly in the Fujian province, but more recently it is produced in Eastern Nepal, Taiwan, Northern Thailand, Galle (Southern Sri Lanka) and India.
White tea comes from the buds and leaves of the Camellia sinensis plant. The leaves and buds are allowed to wither and dry in natural sun.
The name "white tea" derives from the fine silvery-white hairs on the unopened buds of the tea plant, which gives the plant a whitish appearance. The beverage itself is not white or colourless but pale yellow and light to the taste.
Usage examples of "white tea".
She entered with a huge tin tray piled with heavy white tea cups and saucers, a plate of thick bread and butter, and to my horror a dish stacked high with shrimps.
We were at the Caribou Coffee in Apple Valley, snarfing down muffins (well, she was) and white tea.