noun.
A narrow and intense (relative to ambient light) ray of sunlight.
noun.
Any butterfly of the genus Curetis.
noun.
Any hummingbird of the genus Aglaeactis.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a ray of sunlight
Word Usage
"Survey-ships and detectors were out; the scientists of the Patrol had been for months hard at work on the "sunbeam" -a device to concentrate the energy of the sun into one frightful beam."