(verb) Illuminate, in either a literal or a metaphorical sense - i.e. (literally) to increase the number of photons in a given region of spacetime, or (metaphorically) to resolve confusion or ambiguity.
"The minds of some of our statesmen, like the pupil of the human eye, contract themselves the more, the stronger light there is shed upon them."
This has been a fill your own nodeshells - why should anyone else have to? production.