The lens (or combination of lenses) at the eye end of a microscope or telescope by which the image is viewed.
The transparent crystalline structure in the eye.
A genus of the legume family; its bean.
A construct used in statically-typed functional programming languages to access nested data structures.
An object, usually made of glass, that focuses or defocuses the light that passes through it.
A convex shape bounded by two circular arcs, joined at their endpoints, the corresponding concave shape being a lune.
A device which focuses or defocuses electron beams.
A way of looking, literally or figuratively, at something.
A body of rock, ice, or water shaped like a convex lens.
To film, shoot.
To become thinner towards the edges.