aperture

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ap|er|ture /'æpərtʃər/ (apertures)
1 [N-COUNT]
An aperture is a narrow hole or gap. (FORMAL)
Through the aperture he could see daylight.
2 [N-COUNT]
In photography, the aperture of a camera is the size of the hole through which light passes to reach the film.

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abreast

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ablaze

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allowance

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