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’.