Open English Wordnet
Nouns
(n)lens, lense, lens systema transparent optical device used to converge or diverge transmitted light and to form images
(n)lens, crystalline lens, lens of the eyebiconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focus light on the retina
(n)lens, electron lenselectronic equipment that uses a magnetic or electric field in order to focus a beam of electrons