opening /ˈəʊpənɪŋ/ noun [C]
HOLE › a hole or space that something or someone can pass through: We found an opening in the fence and climbed through.
START › the beginning of something: The opening of the opera is quite dramatic.
CEREMONY › a ceremony at the beginning of an event or activity: I've been invited to the opening of the new exhibition on Tuesday.
OPPORTUNITY › a job or an opportunity to do something: There's an opening for an editorial assistant in our department.