Meaning of LENS in English

LENS

/ lenz; NAmE / noun

1.

a curved piece of glass or plastic that makes things look larger, smaller or clearer when you look through it :

a pair of glasses with tinted lenses

a camera with an adjustable lens

a lens cap / cover

—picture at binoculars , camera , frame , glass

—see also fisheye lens , telephoto lens , wide-angle lens , zoom lens

2.

( informal ) = contact lens :

Have you got your lenses in?

3.

( anatomy ) the transparent part of the eye, behind the pupil , that focuses light so that you can see clearly

—picture at eye

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WORD ORIGIN

late 17th cent.: from Latin , lentil (because of the similarity in shape).

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.