Anything that provides guidance; a guideline.
A signpost.
A device that generates heat, light or other radiation. Especially an electric light bulb.
A device containing oil, burnt through a wick for illumination; an oil lamp.
A piece of furniture holding one or more electric light sockets.
To hunt at night using a lamp; see lamping.
To make into a table lamp, said of a vase or urn, etc.
To hang out or chill; to do nothing in particular.
To hit, clout, belt, wallop.