narrowdoor
nounUK /ˈnærəʊ dɔː/
US /ˈnæroʊ dɔːr/
A door that is small and not wide.
The cat squeezed through the narrowdoor to get outside.
OTHER MEANINGS
2. A hard or difficult way to get into something.
Learning to read was a narrowdoor to a big new world.
3. A small opening in a wall or fence.
We found a narrowdoor in the garden wall.
4. A way in that only a few people can use.
The secret club had a narrowdoor that only members knew about.