aperture

Noun
  1. A device that controls amount of light admitted (synset 102730066)
    is a type of: regulator - any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.
    is a part of:
    • camera, photographic camera - equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)
    • scope, telescope - a magnifier of images of distant objects
  2. A natural opening in something (synset 109223909)
    is a type of: hole - an opening into or through something
    subtypes:
    • pupil - the contractile aperture in the center of the iris of the eye; resembles a large black dot
    • micropyle - minute opening in the wall of an ovule through which the pollen tube enters
    • pore, stoma, stomate - a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
    is a part of: eye, oculus, optic - the organ of sight
  3. An man-made opening;
    Usually small (synset 102729941)
    is a type of: opening - a vacant or unobstructed space that is man-made
    subtypes:
    • embouchure, mouthpiece - the aperture of a wind instrument into which the player blows directly
    • mouthpiece - a part that goes over or into the mouth of a person

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