Available Definitions:
1) n. - Shining; bright; resplendent; as, the lucid orbs of heaven.
2) n. - Clear; transparent.
3) n. - Presenting a clear view; easily understood; clear.
4) n. - Bright with the radiance of intellect; not darkened or confused by delirium or madness; marked by the regular operations of reason; as, a lucid interval.