What does とぃぅ mean in Japanese? How to use it?

1. When providing new information that the other party doesn't know, add "とぃぅ" after the words indicating new information.

Ex: I live in Tokyo, Setagaya and Setagaya (I live in a place called Tokyo).

2. It can also be used to explain or define the former noun, and the latter noun is mostly the word "meaning".

Example: "No Parking" sign means "No Parking" (this sign means No Parking).