glint

Concise Oxford English Dictionary © 2008 Oxford University Press:
glint/ɡlɪnt/

▶verb give out or reflect small flashes of light. ▶noun

• 1 a small flash of light, especially a reflected one.

• 2 an expression of an emotion in a person's eyes.

– origin 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’.