- aperture - a device that controls amount of light admitted
--1 is a kind of regulator
--1 is a part of camera, photographic camera; telescope, scope- aperture - a natural opening in something
--2 is a kind of hole
--2 is a part of eye, oculus, optic
--2 has particulars: pupil; micropyle; stoma, stomate, pore- aperture - an man-made opening; usually small
--3 is a kind of opening
--3 has particulars: mouthpiece, embouchure; mouthpiece - aperture - a natural opening in something