FluentPlex

open out

verb
  1. To expand, to widen, to unwrap, unfold or uncover, to spread out from a compact state.
  2. To facilitate wider access or expand options. · The plan will open out the region for trade.
  3. To increase the amount of air in an engine, such as by pressing on the accelerator to open a throttle plate or butterfly valve.
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From the library

There is no communication between them, but they all open out into the same corridor.
The Adventures of Sherlock Holmes, p. 42 · B2
“The windows of the three rooms open out upon the lawn.
The Adventures of Sherlock Holmes, p. 42 · B2
It was dark in the hole; and Rikki-tikki never knew when it might open out and give Nagaina room to turn and strike at him.
The Jungle Book, p. 83 · B2
A door suddenly flew open out of what appeared to be solid wall at the end of the corridor, and a little, wizened man darted out of it, like a rabbit out of its burrow.
The Return of Sherlock Holmes, p. 61 · C1

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.