1. To do something which is the first part of an activity, or the first part of a text (such as a book or a film). English = start, begin, open.
2. To move something, such as a door or a lid on a box, so that it no longer covers a hole or a gap; to move, remove, or cut part of a thing such as a cupboard, container, or letter so that you can take out what is inside. English = open.
3. To tell people at a special ceremony that a new product is available to the public. English = launch.