diaphragm in Irish

(anatomy) In mammals, a sheet of muscle separating the thorax from the abdomen, contracted and relaxed in respiration to draw air into and expel air from the lungs.

A contraceptive device consisting of a flexible cup, used to cover the cervix during intercourse.

(mechanics) A flexible membrane separating two chambers and fixed around its periphery that distends into one or other chamber as the difference in the pressure in the chambers varies.

(optics, photography) A thin opaque structure with a central aperture, used to limit the passage of light into a camera or similar device.