lens

Noun

• electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons

• biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina

• (metaphor) a channel through which something can be seen or understood
  • the writer is the lens through which history can be seen
    

• genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils

• a transparent optical device used to converge or diverge transmitted light and to form images

Related words

• Synonyms: 
  electron lens , crystalline lens , lens of the eye , Lens , genus Lens , lense , lens system