lens /lenz/ noun [countable]
[Date: 1600-1700; Language: Latin; Origin: 'lentil'; because of its shape]

1. the part of a camera through which the light travels before it reaches the film:
a standard 50 mm lens ⇒ telephoto lens, wide-angle lens, zoom lens

2. a piece of curved glass or plastic which makes things look bigger, smaller, or clearer when you look through it:
glasses with powerful lenses
the lens of the microscope

3. the clear part inside your eye that focuses so you can see things clearly

4. a contact lens

[TahlilGaran] Dictionary of Contemporary English ▲

lens
noun
ADJ. strong, thick She wears glasses with very thick lenses.
coloured, tinted | contact | optical, spectacle | camera | fish-eye, long, long-focus, magnifying, telephoto, telescopic, wide-angle, zoom a long-lens shot of a rare bird The photograph was taken using a zoom lens.
LENS + NOUN cap I took the lens cap off my camera and waited for a good shot.
PREP. through a/the ~ Put your hand in front of your right lens and just look through your left lens.

[TahlilGaran] Collocations Dictionary ▲