Merriam-Webster's Collegiate® Dictionary, 11th Edition
GLEAM
I. noun see: yellow
Date: 15th century
1. a transient appearance of subdued or partly obscured light , b. a small bright light , glint , a brief or faint appearance , gleamy adjective
II. verb
Date: 1508
intransitive verb to shine with or as if with subdued steady light or moderate brightness, to appear briefly or faintly , transitive verb to cause to gleam, see: flash