What is the literal meaning of the Chinese dining tradition, "Yum Cha"?

It is an integral part of the culinary culture of Guangdong Province, Hong Kong and Macau. In any city with a sizeable population of Cantonese people, going to yum cha is a tradition on weekend mornings, and whole families gather to chat and eat dim sum and drink Chinese tea. Yum cha is also a morning ritual for the elderly to spend a good part of the morning after early morning exercise of tai chi or a walk.