Meaning

noun an open or empty space in or between things

noun a ceremony accompanying the start of some enterprise

noun becoming open or being made open

originFrom Middle English openyng, openynge, openunge, from Old English openung (“an opening”), from Proto-West Germanic *opanungu, from Proto-Germanic *upanungō (“an opening”), equivalent to open + -ing. Cognate with Saterland Frisian Eepenge, Epenge (“an opening”), West Frisian iepening (“an opening”), Dutch opening (“an opening”), German Öffnung (“an opening”), Danish åbning (“an opening”), Swedish…

Etymology from Wiktionary, CC BY-SA 3.0