Here are some possibilities:
* South African English: In South Africa, "langa" can refer to a township or informal settlement. This is a common usage and could be a reference to the Langa Township in Cape Town.
* Other languages: "Langa" could be a word from another language with a different meaning. To know its meaning, you need more information about where you encountered the word and its context.
To understand the meaning of "langa," please provide more information such as:
* The language it's from: Is it from South Africa, another country, or a specific dialect?
* The context it was used in: Was it in a conversation, a book, or a piece of writing?
* The surrounding words: Were there any other words used that could provide clues to the meaning?
With more information, I can provide a more accurate and helpful answer.