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