Openings

noun

1. An act or instance of making or becoming open.

   "He remembered fondly the Christmas morning opening of presents."

2. Something that is open.

   "A salamander darted out of an opening in the rocks."

3. An act or instance of beginning.

   "Their opening of the concert with Brass in Pocket always fires up the crowd."

4. Something that is a beginning.
5. A vacant position, especially in an array.

   "Are there likely to be any openings on the Supreme Court in the next four years?"