openings

noun

1. 1

   An act or instance of making or becoming open.

   “He remembered fondly the Christmas morning opening of presents.”

2. 2

   Something that is open.

   “A salamander darted out of an opening in the rocks.”

3. 3

   An act or instance of beginning.

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

4. 4

   Something that is a beginning.

5. 5

   A vacant position, especially in an array.

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

6. 6

   An opportunity, as in a competitive activity.

7. 7

   In mathematical morphology, the dilation of the erosion of a set.