Definitions of lens:
- noun: a transparent optical device used to converge or diverge transmitted light and to form images
- noun: electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons
- noun: biconvex transparent body situated behind the iris in the eye; it focuses light waves on the retina
- noun: (metaphor) a channel through which something can be seen or understood
Example: "The writer is the lens through which history can be seen"
- noun: genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils