Definition of lens
The word "lens" uses 4 letters: elns.
n. - A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. 2
Words formed by adding one letter before or after lens (in bold), or to elns in any order: