n.
1.a mechanical device in a camera that controls size of aperture of the lens
2.(anatomy) a muscular partition separating the abdominal and thoracic cavities
3.a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic
4.electro-acoustic transducer that vibrates to receive or produce sound waves
Idiom of the Day
follow one's nose
to go straight ahead, to be guided by instinct
We followed our nose until we found the train station.