"diaphragms" in the noun sense
1. diaphragm, stop
a mechanical device in a camera that controls size of aperture of the lens
"the new cameras adjust the diaphragm automatically"
2. diaphragm, midriff
anatomy) a muscular partition separating the abdominal and thoracic cavities functions in respiration
3. diaphragm, pessary, contraceptive diaphragm
a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic it is filled with spermicide and fitted over the uterine cervix
electro-acoustic transducer that vibrates to receive or produce sound waves
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