only 1 use
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Definition
an opening — especially a small one that controls the amount of light admitted for a camera or microscope
or:
the measured diameter of the opening
or:
the measured diameter of the opening
- Crawling on all fours, I made steadily but slowly towards them, till at last, raising my head to an aperture among the leaves, I could see clear down into a little green dell beside the marsh, and closely set about with trees, where Long John Silver and another of the crew stood face to face in conversation.Chapter 14 — The First Blow (34% in)
There are no more uses of "aperture" in Treasure Island.
Typical Usage
(best examples)