v.
 give out or reflect small flashes of light.
n.
  - a small flash of light, especially a reflected one.
 - an expression of an emotion in a person's eyes.
 
 
  Etymology
  ME (in the sense ‘move quickly or obliquely’): var. of dial. glent, prob. of Scand. origin and rel. to Swed. dial. glänta, glinta ‘to slide, gleam’.