invisibleopening

noun
UK /ɪnˈvɪzəbəl ˈəʊpənɪŋ/
US /ɪnˈvɪzəbəl ˈoʊpənɪŋ/

A secret door or hole you cannot see.

The rabbit ran through an invisible opening in the hedge.


OTHER MEANINGS

2. A chance to do something that is hard to notice.

She found an invisible opening to join the game.

3. A space in a story where the writer leaves something out on purpose.

The author created an invisible opening for readers to imagine what happened next.

4. A gap in a wall or fence that is covered up so it cannot be seen.

The cat slipped through an invisible opening near the gate.